340 BENTHAM ON MIMOSE^. 



Semina obovato-orbicularia piano compressa. — Common in 

 the provinces of Bahia, Blanchet, 2701, and 2899, and 

 Piauhy, Gardner, /?.2l39. Tiie Acacia Thibaudiana, DC, 

 Prod. ii. 456, or Sophora ohliqua, Pers. Syn. i. 452, is 

 probably the same species. 



Sect. III. NioPA. Legiimen inter semina scepius plus mi- 

 nusve contractum valvulis membranaceo-coriaceis extus sicci- 

 tate glandidoso-leprosis rufescentibus rarius IcBviiisculis. 

 Arbor es inermes, pedunculis fasciculatis brevibus axillaribuSy 

 Jioribiis globoso-capitatis. Legumina stipitata. 

 In the distinction of the five following species I am not 

 sure that I am right. The foliage and flowers are so much 

 alike that one would be tempted to consider thetn all (except 

 perhaps P. microphylla^ as varieties of one, were it not for 

 the fruit which differs considerably in form and proportions. 

 This makes me, in some cases, doubt whether I have properly 

 matched the flowering and fruit-bearing specimens. 

 i^ 21. P. peregrina^ pinnis 15 — 30-jugis, foliolis 30 — 80-jugis 

 glabriusculis ciliolatis obscure uninerviis, pedunculis capitulo 

 pluries longioribus, floribus puberulis, legumine recto-moni- 

 liformi, margine vix incrassato. — Glandulse ut in omnibus 

 fere Piptadeniis majusculse prope basin petioli, minores infra 

 juga pinnarum 2—3 suprema. Foliola IJ — 2- lin. longa. 

 Pedunculi plerique fere pollicares. Legumen 3 — 5-poll. 

 longum, 5 — 6-lin. latum, inter semina valde contractum et 

 facile (dum immaturum?) rumpens, maturum bivalve, valvu- 

 lis fuscis in siccitate verrucoso-punctatis Mimosa peregrina, 



Linn. {Acacia, Willd., DC.) Inga Niopa, Humb. et Bonpl- 

 in Willd. Sp. iv. 1025, {/Jcacia, Humb. et Kunth, Nov. 

 Gen.) Mimosa? Acacioides, Benth. in Hook. Journ. Bot. ii- 

 132 — On the upper Essequibo and the Rio Branco; Schoni- 

 hurgk; on the Orinoco, and in New Granada, Humboldt and 

 Bonpland ; Peru, Mathetv's n. 907; and perhaps Utinga in 

 Brazil, B lanchet, 2761. Though I have not seen Humboldt's 

 specimens either of the plant described by Kunth from 

 flowering specimens, as Acacia peregrina, or of that described 



