Senna pilosior (B.L.Rob.) H.S.Irwin & Barneby

국표에는 없다.

Senna, the sennas, is a large genus of flowering plants in the legume family (Fabaceae, subfamily Caesalpinioideae, tribe Cassieae). This diverse genus is native throughout the tropics, with a small number of species in temperate regions. The number of species is estimated to be from about 260 to 350. The type species for the genus is Senna alexandrina. About 50 species of Senna are known in cultivation.

[결명속(決明屬, 학명: Senna 센나[*])은 콩과의 속이다. 과거에는 카시아속에 포함시키기도 하였다. 300여 종을 포함하는 큰 속이며, 주로 열대 지역에 널리 분포하지만 일부 종은 온대 지역에 분포한다.]

Senna includes herbs, shrubs, and trees. The leaves are pinnate with opposite paired leaflets. The inflorescences are racemes at the ends of branches or emerging from the leaf axils. The flower has five sepals and five usually yellow petals. There are ten straight stamens. The stamens may be different sizes, and some are staminodes. The fruit is a legume pod containing several seeds.

Chamaecrista, Cassia, and Senna form a monophyletic group which some authors have called Cassia sensu lato. In 1982, the group was named Cassiinae and classified as a subtribe of the tribe Cassieae. The tribe Cassieae contains 21 genera and is now known to be polyphyletic, but the classification is still accepted because a revision of Fabaceae has yet to be published.

The genus Senna has had a complex taxonomic history. What is now known as Senna was included by Linnaeus in his concept of Cassia in Species Plantarum in 1753. Philip Miller segregated Senna from Cassia in 1754 in the fourth edition of The Gardeners Dictionary. Until 1982, many authors, following Linnaeus, did not recognize Senna and Chamaecrista, but included them in a broadly circumscribed Cassia sensu lato. Phylogenetic analyses of DNA have shown that Chamaecrista, Cassia, and Senna are all monophyletic, but the relationships between these three genera have not been resolved. They are therefore shown in phylogenetic trees as a tritomy.

Species

As of December 2019, Plants of the World Online accepted the following species:

• Senna acanthoclada (Griseb.) H.S.Irwin & Barneby
• Senna acclinis (F.Muell.) Randell

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• Senna pilosior (B.L.Rob.) H.S.Irwin & Barneby — Trans-Pecos senna
• Senna pinheiroi H.S.Irwin & Barneby
• Senna pistaciifolia (Kunth) H.S.Irwin & Barneby

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• Senna williamsii (Britton & Rose) H.S.Irwin & Barneby
• Senna wislizeni (A.Gray) H.S.Irwin & Barneby
• Senna wurdackii H.S.Irwin & Barneby – Wislizenus' senna, shrubby senna

Senna (plant) - Wikipedia

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