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词条 Rhododendron subsect. Ledum
释义

  1. Description

  2. Taxonomy

     Reclassification into Rhododendron  Species  Species References  Hybrids 

  3. Uses

  4. See also

  5. Notes

  6. References

  7. Bibliography

{{DISPLAYTITLE:Rhododendron subsect. Ledum}}{{taxobox
|name = Rhododendron subsect. Ledum
|image = Ledum glandulosum 7486.JPG
|image_caption = Rhododendron columbianum (Ledum glandulosum)
|regnum = Plantae
|unranked_divisio = Angiosperms
|unranked_classis = Eudicots
|unranked_ordo = Asterids
|ordo = Ericales
|familia = Ericaceae
|genus = Rhododendron
|subgenus = Rhododendron
|sectio = Rhododendron
|subsectio = Ledum
|subsectio_authority = (L.) Kron & Judd
|subdivision_ranks = Species
|subdivision = See text.
|}}

Ledum was a genus in the family Ericaceae, including 8 species of evergreen shrubs native to cool temperate and subarctic regions of the Northern Hemisphere and commonly known as Labrador tea. It is now recognised as a subsection of section Rhododendron, subgenus Rhododendron, of the genus Rhododendron.

Description

Ledum species often grow together with poisonous plants such as bog-laurel and bog-rosemary, but certain species (e.g. L. groenlandicum and L. palustre) are easily distinguished by the distinctive rust coloured fuzz on the bottom of leaves.

Taxonomy

Reclassification into Rhododendron

Recent genetic evidence has shown that the species previously treated in this genus are correctly placed in the genus Rhododendron, where they are now treated as Rhododendron subsect. Ledum.{{sfn|Harmaja|1991}} Because some of the species names used in Ledum could not be used in Rhododendron (the names already having been used for other species already in this large genus), new names had to be coined for them.[1]

Species

The species listed in genus Ledum (accepted and synonyms), with their current accepted names are:

Ledum speciesAuthorGBIF StatusTPL StatusGBIF Accepted speciesAuthorGBIF StatusTPL Accepted speciesAuthorTPL Status
Ledum L. Accepted
Ledum angustifolium Hort. ex Lavallée Accepted[3]
Ledum buxifolium Bergius Synonym[4] Kalmia buxifolia (Bergius) Gift & Kron Accepted[5]
Ledum californicum Kellogg Synonym[6] Ledum glandulosum Accepted[7]
Ledum columbianum Piper Synonym[8] Accepted[9] Rhododendron columbianum (Piper) Harmaja Accepted[10]
Ledum decumbens (Ait.) Lodd. Synonym[11] Rhododendron tomentosum subsp. decumbens (Aiton) Elven & D.F.Murray Accepted[12]
Ledum decumbens (Ait.) Lodd. ex Steud. Synonym[13] Synonym[14] Rhododendron tomentosum subsp. decumbens (Aiton) Elven & D.F.Murray Accepted[12] Ledum palustre subsp. decumbens Accepted[16]
Ledum decumbens Small Accepted[17] Accepted[18]
Ledum glandulosum Nutt. Synonym[19] Accepted[7] Rhododendron neoglandulosum Harmaja Accepted[21]
Ledum glandulosum subsp. glandulosum Synonym[22] Ledum glandulosum Accepted[7]
Ledum glandulosum var. californicum (Kellogg) C.L.Hitchc. Synonym[24] Ledum glandulosum Accepted[7]
Ledum glandulosum var. glandulosum Synonym[26] Ledum glandulosum Accepted[7]
Ledum groenlandicum Oeder Synonym[28] Synonym[29] Rhododendron groenlandicum (Oeder) K.A.Kron & W.S.Judd Accepted[30] Ledum palustre subsp. groenlandicum Accepted[31]
Ledum groenlandicum Retz. Accepted[32]
Ledum groenlandicum f. denudatum Vict. & J.Rousseau Accepted[33]
Ledum groenlandicum subsp. glandulosum (Nutt.) Á.Löve & D.Löve Synonym[34] Synonym[35] Rhododendron neoglandulosum Harmaja Accepted[21] Ledum glandulosum Accepted[7]
Ledum groenlandicum var. aridiphilum D.Löve Accepted[38]
Ledum hypoleucum Kom. Synonym[39] Synonym[40] Rhododendron diversipilosum (Nakai) H.Harmaja Accepted[41] Rhododendron hypoleucum (Kom.) Harmaja Accepted[42]
Ledum idahoensis Accepted[43]
Ledum macrophyllum Tolm. Synonym[44] Accepted[45] Rhododendron diversipilosum (Nakai) H.Harmaja Accepted[41]
Ledum maximum (Nakai) A.P.Khokhr. & M.T.Mazurenko Synonym[47] Accepted[48] Rhododendron tomentosum Harmaja Accepted[49]
Ledum palustre L. Synonym[50] Accepted[51] Rhododendron tomentosum Harmaja Accepted[49]
Ledum palustre Michx. Synonym[53] Rhododendron groenlandicum (Oeder) K.A.Kron & W.S.Judd Accepted[30]
Ledum palustre f. decumbens (Aiton) Y.L.Chou & S.L.Tung Synonym[55] Ledum palustre subsp. decumbens Accepted[16]
Ledum palustre subsp. angustissimum Worosch. Synonym[57] Rhododendron subulatum (Nakai) Harmaja Accepted[58]
Ledum palustre subsp. decumbens (Aiton) Hultén Accepted[16]
Ledum palustre subsp. diversipilosum Hara Synonym[60] Ledum macrophyllum Accepted[45]
Ledum palustre subsp. groenlandicum (Oeder) Hultén Synonym[62] Accepted[31] Rhododendron groenlandicum (Oeder) K.A.Kron & W.S.Judd Accepted[30]
Ledum palustre var. angustifolium Hook. [65]{{efn>This is an inconsistency in GBIF data: the species name is a "Synonym" but a variety is "Accepted".}}
Ledum palustre var. angustum E.A.Busch Synonym[66] Ledum palustre Accepted[51]
Ledum palustre var. decumbens Aiton Synonym[68] Ledum palustre subsp. decumbens Accepted[16]
Ledum palustre var. diversipilosum Nakai Synonym[70] Synonym[71] Rhododendron diversipilosum (Nakai) H.Harmaja Accepted[41] Ledum macrophyllum Accepted[45]
Ledum palustre var. latifolium (Jacq.) Hook. Synonym[74] Rhododendron groenlandicum (Oeder) K.A.Kron & W.S.Judd Accepted[30]
Ledum palustre var. latifolium (Jacq.) Michx. Synonym[76] Rhododendron groenlandicum (Oeder) K.A.Kron & W.S.Judd Accepted[30]
Ledum palustre var. maximum Nakai Synonym[78] Ledum maximum Accepted[48]
Ledum palustre var. palustre Synonym[80] Ledum palustre Accepted[51]
Ledum palustre var. subulatum Nakai Synonym[82] Rhododendron subulatum (Nakai) Harmaja Accepted[83]
Ledum serpyllifolium Accepted[84]
Ledum subulatum (Nakai) A.P.Khokhr. & M.T.Mazurenko Synonym[85] Synonym[86] Rhododendron subulatum (Nakai) Harmaja Accepted[58] Rhododendron subulatum (Nakai) Harmaja Accepted[83]

Species References

Ledum

1. ^1 2 {{harvnb|Kihlman|2004}}
2. ^1 {{cite web |editor=GBIF Secretariat |date=2016 |website=GBIF Backbone Taxonomy |access-date=2017-09-20 |title=Ledum angustifolium Hort. ex Lavallée |url=https://www.gbif.org/species/4175552}}
3. ^1 {{cite web |editor=GBIF Secretariat |date=2016 |website=GBIF Backbone Taxonomy |access-date=2017-09-20 |title=Ledum columbianum Piper |url=https://www.gbif.org/species/2882973}}
4. ^1 {{cite web |editor=GBIF Secretariat |date=2016 |website=GBIF Backbone Taxonomy |access-date=2017-09-20 |title=Ledum decumbens (Ait.) Loddiges |url=https://www.gbif.org/species/8600528}}
5. ^1 {{cite web |editor=GBIF Secretariat |date=2016 |website=GBIF Backbone Taxonomy |access-date=2017-09-20 |title=Ledum decumbens (Ait.) Loddiges ex Steudel |url=https://www.gbif.org/species/4175475}}
6. ^1 {{cite web |editor=GBIF Secretariat |date=2016 |website=GBIF Backbone Taxonomy |access-date=2017-09-20 |title=Ledum decumbens Small |url=https://www.gbif.org/species/7632051}}
7. ^1 {{cite web |editor=GBIF Secretariat |date=2016 |website=GBIF Backbone Taxonomy |access-date=2017-09-20 |title=Ledum glandulosum Nutt. |url=https://www.gbif.org/species/2882978}}
8. ^1 {{cite web |editor=GBIF Secretariat |date=2016 |website=GBIF Backbone Taxonomy |access-date=2017-09-20 |title=Ledum groenlandicum Oeder |url=https://www.gbif.org/species/2882982}}
9. ^1 {{cite web |editor=GBIF Secretariat |date=2016 |website=GBIF Backbone Taxonomy |access-date=2017-09-20 |title=Ledum groenlandicum Retz. |url=https://www.gbif.org/species/8655553}}
10. ^1 {{cite web |editor=GBIF Secretariat |date=2016 |website=GBIF Backbone Taxonomy |access-date=2017-09-20 |title=Ledum groenlandicum f. denudatum Vict. & J.Rousseau |url=https://www.gbif.org/species/4175349}}
11. ^1 {{cite web |editor=GBIF Secretariat |date=2016 |website=GBIF Backbone Taxonomy |access-date=2017-09-20 |title=Ledum groenlandicum var. aridiphilum D.Löve |url=https://www.gbif.org/species/2882981}}
12. ^1 {{cite web |editor=GBIF Secretariat |date=2016 |website=GBIF Backbone Taxonomy |access-date=2017-09-20 |title=Ledum groenlandicum var. aridiphilum D.Löve |url=https://www.gbif.org/species/4175357}}
13. ^1 {{cite web |editor=GBIF Secretariat |date=2016 |website=GBIF Backbone Taxonomy |access-date=2017-09-20 |title=Ledum hypoleucum Komarov |url=https://www.gbif.org/species/4175335}}
14. ^1 {{cite web |editor=GBIF Secretariat |date=2016 |website=GBIF Backbone Taxonomy |access-date=2017-09-20 |title=Ledum idahoensis |url=https://www.gbif.org/species/8930301}}
15. ^1 {{cite web |editor=GBIF Secretariat |date=2016 |website=GBIF Backbone Taxonomy |access-date=2017-09-20 |title=Ledum macrophyllum Tolm. |url=https://www.gbif.org/species/4175299}}
16. ^1 {{cite web |editor=GBIF Secretariat |date=2016 |website=GBIF Backbone Taxonomy |access-date=2017-09-20 |title=Ledum maximum (Nakai) A.P.Khokhrjakov & M.T.Mazurenko |url=https://www.gbif.org/species/4175289}}
17. ^1 {{cite web |editor=GBIF Secretariat |date=2016 |website=GBIF Backbone Taxonomy |access-date=2017-09-20 |title=Ledum palustre L. |url=https://www.gbif.org/species/2882977}}
18. ^1 {{cite web |editor=GBIF Secretariat |date=2016 |website=GBIF Backbone Taxonomy |access-date=2017-09-20 |title=Ledum palustre Michx. |url=https://www.gbif.org/species/7662778}}
19. ^1 {{cite web |editor=GBIF Secretariat |date=2016 |website=GBIF Backbone Taxonomy |access-date=2017-09-20 |title=Ledum palustre subsp. angustissimum Worosch. |url=https://www.gbif.org/species/7353980}}
20. ^1 {{cite web |editor=GBIF Secretariat |date=2016 |website=GBIF Backbone Taxonomy |access-date=2017-09-20 |title=Ledum palustre subsp. groenlandicum (Oeder) Hulten |url=https://www.gbif.org/species/8949547}}
21. ^1 {{cite web |editor=GBIF Secretariat |date=2016 |website=GBIF Backbone Taxonomy |access-date=2017-09-20 |title=Ledum palustre var. angustifolium Hook. |url=https://www.gbif.org/species/4175216}}
22. ^1 {{cite web |editor=GBIF Secretariat |date=2016 |website=GBIF Backbone Taxonomy |access-date=2017-09-20 |title=Ledum palustre var. diversipilosum Nakai |url=https://www.gbif.org/species/6550071}}
23. ^1 {{cite web |editor=GBIF Secretariat |date=2016 |website=GBIF Backbone Taxonomy |access-date=2017-09-20 |title=Ledum palustre var. latifolium (Jacq.) Hook. |url=https://www.gbif.org/species/7930684}}
24. ^1 {{cite web |editor=GBIF Secretariat |date=2016 |website=GBIF Backbone Taxonomy |access-date=2017-09-20 |title=Ledum palustre var. latifolium (Jacq.) Michx. |url=https://www.gbif.org/species/2882985}}
25. ^1 {{cite web |editor=GBIF Secretariat |date=2016 |website=GBIF Backbone Taxonomy |access-date=2017-09-20 |title=Ledum serpyllifolium |url=https://www.gbif.org/species/9180629}}
26. ^1 {{cite web |editor=GBIF Secretariat |date=2016 |website=GBIF Backbone Taxonomy |access-date=2017-09-20 |title=Ledum subulatum (Nakai) A.P.Khokhrjakov & M.T.Mazurenko |url=https://www.gbif.org/species/4175065}}
27. ^1 2 3  TPL Reference: group=Ledum name=kew-2349893 Coming soon
28. ^1  TPL Reference: group=Ledum name=kew-2349909 Coming soon
29. ^1  TPL Reference: group=Ledum name=kew-2349911 Coming soon
30. ^1  TPL Reference: group=Ledum name=kew-2355732 Coming soon
31. ^1 2  TPL Reference: group=Ledum name=kew-2355734 Coming soon
32. ^1 2 3 4  TPL Reference: group=Ledum name=kew-2355735 Coming soon
33. ^1  TPL Reference: group=Ledum name=tro-12300073 Coming soon
34. ^1 2 3  TPL Reference: group=Ledum name=tro-12300074 Coming soon
35. ^1  TPL Reference: group=Ledum name=tro-12300613 Coming soon
36. ^1 2 3 4 5 6  TPL Reference: group=Ledum name=tro-12300614 Coming soon
37. ^1  TPL Reference: group=Ledum name=tro-12300615 Coming soon
38. ^1  TPL Reference: group=Ledum name=tro-12302504 Coming soon
39. ^1  TPL Reference: group=Ledum name=tro-12302631 Coming soon
40. ^1  TPL Reference: group=Ledum name=tro-12303119 Coming soon
41. ^1  TPL Reference: group=Ledum name=tro-12303120 Coming soon
42. ^1  TPL Reference: group=Ledum name=tro-12303121 Coming soon
43. ^1  TPL Reference: group=Ledum name=tro-50092423 Coming soon
44. ^1  TPL Reference: group=Ledum name=tro-50156073 Coming soon
45. ^1  TPL Reference: group=Ledum name=tro-50156075 Coming soon
46. ^1  TPL Reference: group=Ledum name=tro-50156076 Coming soon
47. ^1  TPL Reference: group=Ledum name=tro-50176889 Coming soon
48. ^1 2  TPL Reference: group=Ledum name=tro-50194624 Coming soon
49. ^1  TPL Reference: group=Ledum name=tro-50194625 Coming soon
50. ^1  TPL Reference: group=Ledum name=tro-50194628 Coming soon
51. ^1  TPL Reference: group=Ledum name=tro-50194629 Coming soon
52. ^1  TPL Reference: group=Ledum name=tro-50298977 Coming soon
53. ^1 2 {{cite web |editor=GBIF Secretariat |date=2016 |website=GBIF Backbone Taxonomy |access-date=2017-09-20 |title=Rhododendron tomentosum subsp. decumbens (Aiton) Elven & D.F.Murray |url=https://www.gbif.org/species/4926591 }}
54. ^1 2 {{cite web |editor=GBIF Secretariat |date=2016 |website=GBIF Backbone Taxonomy |access-date=2017-09-20 |title=Rhododendron tomentosum Harmaja |url=https://www.gbif.org/species/6400569 }}
55. ^1 2 {{cite web |editor=GBIF Secretariat |date=2016 |website=GBIF Backbone Taxonomy |access-date=2017-09-20 |title=Rhododendron subulatum (Nakai) Harmaja |url=https://www.gbif.org/species/4164381 }}
56. ^1 2 {{cite web |editor=GBIF Secretariat |date=2016 |website=GBIF Backbone Taxonomy |access-date=2017-09-20 |title=Rhododendron neoglandulosum Harmaja |url=https://www.gbif.org/species/4169545 }}
57. ^1 2 3 4 5 {{cite web |editor=GBIF Secretariat |date=2016 |website=GBIF Backbone Taxonomy |access-date=2017-09-20 |title=Rhododendron groenlandicum (Oeder) K.A. Kron & W.S. Judd |url=https://www.gbif.org/species/2882984 }}
58. ^1 2 3 {{cite web |editor=GBIF Secretariat |date=2016 |website=GBIF Backbone Taxonomy |access-date=2017-09-20 |title=Rhododendron diversipilosum (Nakai) H. Harmaja |url=https://www.gbif.org/species/4164838 }}
59. ^1 {{cite web |editor=GBIF Secretariat |date=2016 |website=GBIF Backbone Taxonomy |access-date=2017-09-20 |title=Rhododendron columbianum (Piper) Harmaja |url=https://www.gbif.org/species/4165978 }}
60. ^1 2  TPL Reference: group=Rhody name=tro-50223463 Coming soon
61. ^1  TPL Reference: group=Rhody name=tro-50303827 Coming soon
62. ^1  TPL Reference: group=Kalmia name=tro-50310693 Coming soon
63. ^{{cite web |editor=GBIF Secretariat |date=2016 |website=GBIF Backbone Taxonomy |access-date=2017-09-21 |title=Rhododendron vanhoeffeni Abromeit |url=https://www.gbif.org/species/4925801}}
[2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52]
}}

Rhododendron

{{reflist|group=Rhody|72em|refs=[53][54][55][56][57][58][59][60][61]
}}

Other

{{reflist|group=Kalmia|72em|refs=[62]
}}

Hybrids

Natural hybrids (nothospecies) also occur.

  • Ledum columbianum = Rhododendron × columbianum (R. groenlandicum × R. neoglandulosum) is listed by Harri Harmaja as a natural hybrid.[1]
  • Rhododendron vanhoeffeni Abromeit[63] is a probably hybrid between Ledum palustre subsp. decumbens and Rhododendron lapponicum.[1]

Uses

Some species (e.g. L. groenlandicum) have been used to produce Labrador tea. Other species have varying levels of toxicity (e.g. L. glandulosum). Evergreen Labrador Tea grows slowly, but retains its leaves year-round. Users should take care not to over-harvest leaves from any single plant.

See also

  • List of Sections in Subgenus Rhododendron

Notes

{{notelist}}

References

{{Reflist}}

Bibliography

  • {{cite encyclopedia |chapter-url=http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=128386 |title=Flora of North America |chapter=Rhododendron Linnaeus, Sp. Pl. 1: 392. 1753; Gen. Pl. ed. 5, 185. 1754 |first1=Walter S. |last1=Judd |last-author-amp=yes |first2=Kathleen A. |last2=Kron |volume=8 |year=2009 |ref=FNA}}
  • {{cite journal |url= |last1=Kron |first1=Kathleen A. |last-author-amp=yes |last2=Judd |first2=Walter S. |date=1990 |title=Phylogenetic Relationships within the Rhodoreae (Ericaceae) with Specific Comments on the Placement of Ledum |journal=Systematic Botany |volume=15 |issue=1 |pages=57–68 |doi=10.2307/2419016 |jstor=2419016 |issn=03636445}}
  • {{cite journal |url= |last1=Harmaja |first1=Harri |date=1990 |title=New names and nomenclatural combinations in Rhododendron (Ericaceae) |journal=Ann. Bot. Fennici |volume=27 |issue= 2|pages=203–204 |jstor=23725435}}
  • {{cite journal |url= |last1=Harmaja |first1=Harri |date=1991 |title=Taxonomic notes on Rhododendron subsection Ledum (Ledum, Ericaceae), with a key to its species |journal=Ann. Bot. Fennici |volume=28 |issue= 2|pages=171–173 |jstor=23725406 |ref=harv}}
  • {{cite journal |url=http://www.sekj.org/PDF/anbf35/anbf35-263p.pdf |last1=Harmaja |first1=Harri |date=1999 |title=Rhododendron diversipilosum, comb. nov. (Ericaceae) |journal=Ann. Bot. Fennici |volume=35 |issue= |pages=263–264}}
  • {{cite journal |url=http://www.sekj.org/PDF/anb39-free/anb39-183s.pdf |last1=Harmaja |first1=Harri |date=2002 |title=Rhododendron subulatum, comb. nova (Ericaceae) |journal=Ann. Bot. Fennici |volume=39 |issue= |pages=183–184}}
  • {{cite journal |url=http://scholar.lib.vt.edu/ejournals/JARS/v58n2/v58n2-kihlman.htm |last1=Kihlman |first1=Bengt A. |date=2004 |title=Hybrids Between Ledums and Lepidote Rhododendrons |journal=Journal of the American Rhododendron Society |volume=58 |issue=2 |pages=74–81 |ref=harv}}

5 : Rhododendron|Flora of Alaska|Herbs|Herbal tea|Plant subsections
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