| 词条 | Calochortoideae |
| 释义 |
| image = Sego lily cm.jpg | image_caption = Sego Lily Calochortus nuttallii | taxon = Calochortoideae | authority = Dumort. | subdivision_ranks = Genera | subdivision =
}} The Calochortoideae are a subfamily of monocotyledon perennial, herbaceous mainly bulbous flowering plants in the Liliaceae (lily) family. Approximately the same group of species has been recognized as a separate family, Calochortaceae, in a few systems of plant taxonomy, including the Dahlgren system.[1] They are found predominantly in the temperate regions of the Northern Hemisphere, particularly East Asia and North America. DescriptionFlowers large with no or a very short style. Perianth differentiated into calyx and corolla, tepals pubescent. The embryo-sac is of the Polygonum-type.[2][3] Fruit forms a septicidal capsule.[4] Leaves have parallel venation. Chromosome number is between 6-13, and are 1.5 to 6.5µmin length. TaxonomyThe two genera comprise about 90 species but the situation remains uncertain as to whether both should be included. Originally Calochortus and Tricyrtis were considered to be sister clades and placed together in the subfamily Calochortoideae. Further study has not confirmed this and it has been proposed that Tricyrtis be placed in a separate subfamily.{{sfn|Kim et al|2013a}} References1. ^{{cite book |last1=Watson |first1=L. |last2=Dallwitz |first2=M.J. |date=2014|orig-year=1992 |chapter=Calochortaceae Dum. |title=The families of flowering plants: descriptions, illustrations, identification, information retrieval |url=http://delta-intkey.com/angio/www/calochor.htm |accessdate=2014-01-13 }} 2. ^{{cite book |last=Dahlgren |first=R.M. |last2=Clifford |first2=H.T. |last3=Yeo |first3=P.F. |title=The families of the monocotyledons |year=1985 |publisher=Springer-Verlag |location=Berlin }} 3. ^{{cite journal|last=Ownbey|first=M.|title=A monograph of the genus Calochortus.|journal=Ann. Missouri Bot. Gard.|year=1940|volume=27|pages=371–560|doi=10.2307/2394384}} 4. ^{{cite book|last=Mabberley|first=David J|title=Mabberley's Plant-Book|year=2013|publisher=Cambridge University Press|isbn=1107782597|url=https://books.google.com/books?id=ZFFgAgAAQBAJ&pg=PT861&lpg=PT861|edition=3|accessdate=8 January 2014}} Bibliography{{refbegin}}
2 : Liliaceae|Monocot subfamilies |
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