| 词条 | Felicia fruticosa |
| 释义 |
|image = Felicia fruticosa subspecies fruticosa (1).jpg |genus = Felicia |parent = Felicia sect. Lignofelicia |species = fruticosa |authority = (L.) G.Nicholson[1] |subdivision_ranks = Subspecies |subdivision =
|synonyms =
}}Felicia fruticosa is a strongly branching shrub of up to {{convert|1.3|m}} high that is assigned to the daisy family with flower heads consisting of about twenty purple to white ray florets encircling many yellow disc florets, and small flat, entire and hairless leathery leaves. Two subspecies are recognized. Felicia fruticosa subsp. brevipedunculata, from the Limpopo Province of South Africa is up to {{convert|1.3|m}} tall and has longer leaves of {{convert|2.5|cm}} long and {{convert|2|mm}} wide and nearly seated pale violet to white flower heads. Felicia fruticosa subsp. fruticosa, from the Western Cape province of South Africa, is no more than 1 m and has shorter leaves of {{convert|1.25|cm}} long and {{convert|2.5|mm}} wide with flower heads on largely leafless, about {{convert|2.5|cm}} long stems.[2] It is sometimes called bosastertjie in Afrikaans. In the wild, flower occurs from August till October.[3] DescriptionFelicia fruticosa is a strongly branching shrub of up to 1 or {{convert|1.3|m}} high. The trunk and side branches have fibrous, peeling, greyish brown bark, and end in young, non-flowering long shoots. In the leaf axils of the two-year old and older long shoots are moderately branching short shoots with one to three floral heads each. The slightly succulent leaves are alternately set, lance-shaped to inverted lance-shaped, up to {{convert|1.25|cm|in}} long and {{convert|2.5|mm}} wide, with a pointy tip in the typical subspecies, or always distinctly inverted lance-shaped and up to {{convert|2.5|cm}} long and {{convert|2|mm}} wide in subsp. brevipedunculata. The flat surface is hairless and indistinctly spotted by round resin glands lying in the leaf blade. The broadened leaf base slightly runs down the stem, and is hairless or has a ciliate margin and has woolly hairs in the axil.[2]The floral heads are medium in size. They sit on largely leafless, up to {{convert|2.5|cm|in}} long inflorescence stalks in the typical subspecies. In subsp. brevipedunculata, the heads are practically without stalk and sit directly in the rosette of the short shoots. The involucral bracts are overlapping, arranged in up to four rows, and about {{convert|8|mm}} in diameter. These bracts increase in size from the outside in, the outermost bracts {{convert|1.5|mm|in}} long and {{convert|.5|mm|in}} wide, the innermost {{convert|4|mm|in}} long and {{convert|1|mm|in}} wide, lance-shaped with resinous calluses, yellow-brown in colour, with a smooth edge, and hairless except for the lowest which are slightly woolly at the inner base.[2] There are up to about twenty medium or light purple, rarely white, ray flowers per head, each of which has a strap called ligule of approximately {{convert|10|mm|in}} long and {{convert|2|mm|in}} wide. These encircle numerous yellow disc florets, each with a crown of up to {{convert|4|mm|in}} long. In the middle of each disc floret, the five anthers are merged into a tube through which the style grows when the floret opens. At the tip of both of the style branches is narrow triangular appendage. At the base of each floret are numerous pappus bristles of two lengths, the shorter ones white, scaly, persistent and about {{convert|0.1|mm|in}} long. When mature, the dry, one-seeded, indehiscent fruits called cypselae are dark brown with a lighter margin, {{convert|2.5|mm|in}} long and {{convert|1|mm|in}} wide, narrowly obovate in outline, with a scaly epidermis, and loosely evenly silky hairy.[2] Felicia fruticosa is a diploid having nine sets of homologue chromosomes (2n=18).[2]Differences between the subspeciesFelicia fruticosa subsp. fruticosa reaches a height of maximally {{convert|1|m}}, has lance-shaped to inverted lance-shaped leaves of up to {{convert|1.25|cm}} long and {{convert|2.5|mm}} wide. The heads are on practically leafless, up to {{convert|2.5|cm}} long peduncles. The ray florets are violet, rarely white, the short pappus bristles are {{convert|0.1|mm}} long. In contrast, Felicia fruticosa subsp. brevipedunculata grows to {{convert|1.33|m}} tall, has slightly larger leaves up to {{convert|2.5|cm}} long and {{convert|2|mm}} wide, that are always distinctly inverted lance-shaped. The heads are practically without stalk and sit directly in the rosette of the short shoots. The ray florets are light violet to white, the short pappus bristles are with {{convert|0.3|mm}}, slightly longer than in the subsp. fruticosa.[2]TaxonomyThis species was first described from the Cape by Carl Linnaeus in 1764 as Aster fruticosus. In 1803, Carl Ludwig Willdenow invalidly changed the name to Aster fruticulosus. In 1828, Henri Cassini described another specimen as Diplostephium longipes. When Christian Friedrich Lessing reassigned Linaeus's species, he maintained Willdenow's change, calling the species Diplopappus fruticulosus. Nees von Esenbeck also kept the invalid name, when he moved it again, creating the combination Diplostephium fruticulosum in 1833. In the same publication he also described Diplostephium extenuatum, which was reassigned by Augustin Pyramus de Candolle, who made the name Diplopappus extenuatus in 1836. George Nicholson proposed to include the species in the genus Felicia and so made the combination that is currently in use: Felicia fruticosa. Margaret Levyns published a correction of Lessing's error in 1948, making the combination Diplopappus fruticosus. In 1973 Jürke Grau considered all these names synonymous.[2] The subspecies from the Limpopo Province was initially described by John Hutchinson as Aster brevipedunculatus in 1931. Grau changed its status in 1973 to Felicia fruticosa subsp. brevipedunculatus.[2] Felicia fruticosa is the type species of the section Lignofelicia.[2]The species name fruticosa is a Latin word meaning "shrubby".[4] DistributionFelicia fruticosa subsp. fruticosa is an endemic of the Cape Peninsula and the surroundings of Stellenbosch. Felicia fruticosa subsp. brevipedunculata is known from the Soutpansberg, Blouberg and the Portugal Farm in the Limpopo Province of South Africa, where it occurs at altitudes between {{convert|1300|and|1850|m|ft}}.[2]ConservationThe continued survival of both subspecies of Felicia fruticosa is considered to be of least concern because their populations are stable.[5][6] References1. ^{{cite web|website= The Plantlist|title= Felicia fruticosa (L.) G.Nicholson|url= http://www.theplantlist.org/tpl1.1/record/gcc-116917}} 2. ^1 2 3 4 5 6 7 8 9 {{cite journal|first= J.|last= Grau|year= 1973|title= Revision der Gattung Felicia (Asteraceae)|journal= Mitteilungen der Botanischer Staatssammlung München|volume= IX|pages= 277–279|url= https://www.biodiversitylibrary.org/page/15019162#page/293/mode/1up|accessdate= 2017-11-12}} 3. ^{{cite book|first= John|last= Manning|year= 2007|title= Field Guide to Fynbos|page= 450|isbn= 9781770072657}} 4. ^{{cite web|website= New Zealand Plant Conservation Network|title= Felicia fruticosa|url= http://www.nzpcn.org.nz/flora_details.aspx?ID=3942}} 5. ^{{cite web|website= SANBI Red List of South African Plants|title= Felicia fruticosa subsp. brevipedunculata|url= http://redlist.sanbi.org/species.php?species=3052-64}} 6. ^{{cite web|website= SANBI Red List of South African Plants|title= Felicia fruticosa subsp. fruticosa|url= http://redlist.sanbi.org/species.php?species=3052-65}} External links
4 : Felicia (genus)|Plants described in 1764|Taxa named by Carl Linnaeus|Endemic flora of South Africa |
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