﻿372 MR. G. BENTIIaM on THE MIMOSE^. [Pl^tadenia. 



34). P. PSiLOSTACHYA, Benth. ! in Hook. Joum. Bat. iv. 336. Puberula. Pinnae 7-10- 

 jug3B; foliola multijuga, oblonga, subfalcata, obtusa, 4 lin. longa, glabra, nitida, sub- 

 2-nervia. Spicse graciles, axillares, 2-3-pollicares. Ovarium stipitatum, villosum. 



Acacia psilostachyay DC, ! Prod. ii. 457. 



Acacia stenostachya, Desv. ! in Ham. Prod. PI. Ind. Occid. 59. 



Inga stenostachya, Desv. in Ann. Sc. Nat. ser. 1. ix. 427. 



Sab. Tropical America : Cayenne, Martin ; Surinam, Wullschnageh 



Rami leviter striati. Stipulse parvae^ ovatsBj ssepe desunt. Folionim petiolus communis sub-4-pollicaris. 

 Pinnae 3-pollicares. Glandula majuscula oblonga ad basin petioli^ minor infra jugum snpremum pinnarum, 

 minima infra foliorum paria 1-3 superiora, Spicse in axillis smnmis v, ad apices ramorum fasciculatae, 

 Flores | lin, longi^ extus cano-tomentelli. Legumen ignotum, et idcirco locus in systemate adhuc 



■ 



incertus. 



Sectio 3. NioPA. 



Capitula globosa. Legumen inter semina constrictum v. subcontinuum, planum, cori- 

 aceum, marginibus nerviformibus incrassatis. Arbores inermes. Pinnae multijugse. 

 Foliola multijuga, parva, linearia. 



The four species comprised in this section differ remarkably from the rest of the genus in their globose 

 capitate inflorescence ; and two of them, without the characteristic gland of the anthers, would appear in 

 these respects to have been better placed in Leuc<Bna ; but they are too closely connected with the two 

 species which have the gland to be separated from them ; and the pod and especially the broad orbicular 

 very flat and thin exalbuminous seeds are entirely those of Piptadeniuy and not of Leucana. 



* AntJieris glanduliferis . 



35. P. MACROCARPA, Benth. ! in Eooh. Joum. Bot. iv. 341. Pinnae multijugae ; foliola 

 multijuga, parva. Pedunculi ad axillas fasciculati, summi vix racemosi. Legumen sub- 

 falcatum, f-1 poll, latum, inter semina nonnisi seminum abortione contractum, opacum 



nitidulum. — FL Bras. Mim 



Willd 



WiUd 



Bab. Tropical America : Brazil, prov. Eio Janeiro, Minas Geraes, Goyaz and Matto- 

 grosso; Bolivia, Weddell, B'Orbigny; Tucuman, Tweedie; and perhaps also Loxa in 

 Ecuador, Jameson; but the determination of flowering specimens without the fruits is 

 often very doubtful. 



36. P. coLrBRiNA, Benth. in BooTc. Joum. Bot. iv. 341. Pinnge multijugae ; foliola 

 multijuga, parva. Pedunculi fasciculati, ad apices ramorum racemosi v. paniculati, in- 

 ferioribus paucis axillaribus . Legumen elongatum, |-| poll, latum, inter semina regu- 

 lariter constrictum, nitidum, laeve v. reticulatum. — Ft. Bras. Mim. 



Mimosa colubrina^YeU. EL Flum. Ic. xi. t. 16. 

 Acacia colubrina^ Mart. ! Herb. FL Bras. 107. 

 Acacia per egrinay Kunth ! Mim. 96. t. 30, excL syn. Linn. 



Hah. Tropical America : Brazil, pror. Eio Janeiro, Bahia, San Paolo, Goyaz ; Bolivia, 

 Sorata, Mandon, n. 760; Tucuman, Tweedie ', Peru, Chota, Humboldt and Bonpland\ 

 Huanuco, Matthews, n. 907. 



