|
(Last Modified On 11/16/2012)
|
|
|
|
(Last Modified On 11/16/2012)
|
|
Genus
|
PIPTADENIA Benth.
|
|
PlaceOfPublication
|
Hook. Jour. Bot. 4:334. 1842.
|
|
Synonym
|
Stachychrysum Boi. Hort. Maurit. 114. 1837, fide Ind. Kew. Goidmnania Rose ex Micheli, in Mem. Soc. Bot. Geneve 34:274. 1903, fide Britt. & Rose. Niopa Britt. & Rose, in Addisonia 12:37. 1927. Pityrocarpa Britt. & Rose, in N. Am. Fl. 23:190. 1928.
|
|
Description
|
Shrubs or trees, erect or sometimes decumbent, the branchlets pubescent or glabrous, aculeate or unarmed. Leaves usually large, bipinnate, the pinnae usually several, multifoliolate, both the pinnae and leaflets usually opposite; petiole normally bearing one or more sessile glands; rachis glandular or eglandular at the pinnular nodes; leaflets almost invariably small; stipules usually slender, caducous. Inflorescence of solitary or few-fasciculate, pedunculate heads or spikes, sometimes appearing paniculate by insertion at distal non-foliate nodes; floral bracts small or minute. Flowers 5-parted, sessile or subsessile; calyx more or less campanulate, the teeth commonly small, glabrous or pubescent; corolla of 5 free (or often con- nate to middle), narrow petals well exceeding the calyx, valvate; stamens nor- mally 10, free except often inserted on a short tubular base or androgynophore, exserted; anthers in all except one or two species (not Panamanian) bearing an apical gland, this usually caducous in age; ovary glabrous or pubescent, often stipitate. Legume broadly linear, flat, not curved, stipitate or sessile, membra- naceous or coriaceous, 2-valvate, the valve margins straight or constricted between the seeds; seeds compressed, exalibuminous.
|
|
Habit
|
Shrubs trees
|
|
Distribution
|
New World tropics and subtropics; Asia and Africa.
|
|
Note
|
A moderate-sized genus, abundant in middle and northern South America. It is not particularly "natural" or clear-cut, and except for the confusion that would result there might be justification in recognition of certain segregates (viz. Nioppa). Certain species of Piptadenia, at least superficially, much resemble other genera such as Leucaena, Acacia, and Mimosa. It thus frequently becomes difficult to identify accurately poor or incomplete specimens. The bark of some species is said to be quite astringent, and the seeds are reported highly narcotic. A single species has so far been reported from Panama.
|
|
Distribution
|
Panama
|
|
Tag
|
|
|
|
Project Name
|
|
Tag
|
|
|
|