SCHOMBURGK’S GUIANA PLANTS. 129 
head of the first of these groups, which contains also the 
three genera Dichrostachys, Neptunia, and Desmanthus, united 
into one by De Candolle, but which appear to me as distinct 
from each other as most other genera of Mimosee. . Dichro- 
stachys is, so far as hitherto known, confined to Africa and 
Asia. Of Neptunia, the following occurs in the collections 
before me. 
247. Neptunia polyphylla, DC. Prod. II. 444. sub Des- 
mantho ?— Herbacea, glaberrima, sub aqua crescens, caule 
adscendente subcompresso. - Stipulæ ovatee. vel lanceolate, 
acuminate. Petioli angulati seta terminati. Pinnze3— 5-jugse, 
glandula ovata depressa inter 1—2-inferiores. Foliola seepius 
circa 30-juga, oblongo-linearia, obtusiuscula, 3 lin. longa, 
basi valde inequilatera.. Pedunculi axillares 3—4-pollicares 
glabri. Bractez 1 v. 2 alterne lanceolate acuminate deci- 
dus, minores quam in N. plena. Capitulum ovoideum. 
Flores partis inferioris steriles calyce campanulato quinque- 
dentato. Petala 5 oblonga stipitata. Filamenta 10, basi 
tenuia, extra corollam dilatata linearia membranacea flava, 
$ poll. longa acuta. Flores fertiles in parte superiore capituli : 
Calyx ut in sterilibus. Petala 5, oblongo-linearia basi non 
angustata subconnata. Stamina 10. Anthere breviter ova- 
tæ connectivo apice glandulam stipitatam deciduam ferente, 
loculis ipsis secus rimas demum verrucoso-glandulosis. Ova- 
rium oblongum breviter stipitatum, dubta stigma magnum 
cupulatum. Legumen non vidi.—In savannahs, British 
Guiana. Schomburgk, n. 751. 
The old Mimosa plena, or, Neptunia plena, which. possess a 
from St Vincent’s, is allied to the above; but has fewer leaf- 
lets, the stem more compressed and pubescent, and the bracts 
much broader. I have besides two East Indian species, one 
Australian, one Peruvian (Cuming, n. 1027), one Brazilian, 
(Blanchet, n. 2700), and two Texian species, (Drummond, 
_ 3d Coll. n. 150 and 158.) 
The true Desmanthi, or De Candolle’s section Desmanthea, — 1 a 
=~ with the sterile flowers of a has the habit and other _ 
characters of Darlingtonia. 1 possess five or six species, in- 
cluding Gardner’s n. 981, from Pernambuco, Cana "Y S 
Vol. IL.—No. HE s Pone 
