SCHOMBURGK'S GUIANA PLANTS. 131 
254. M. (Eumimosa ? bipinnata) paniculata (sp. n.) ; ramu- 
lis petiolisque pubescentibus retrorsum aculeatis, foliis bipin- 
natis, glandulis conicis ad basin petioli inter pinnas supre- 
mas et inter foliola suprema, pinnis 5—7-jugis, foliolis 7—11- 
jugis oblique falcato-rhombeis valde inzequilateris mucronu- 
latis basi binerviis supra lucidis minute hirtellis subtus pubes- 
centibus, racemis terminalibus paniculatis, capitulis globosis, _ 
leguminibus , .....—Caulis scandens videtur. ^ Foliola 
4—5 lin. longa, 3 lin. lata. Stipule subulate decidue, 
Stipelle setacez ad basin pinnarum. Capitula numerosa 
fasciculata breviter et inzequaliter pedunculata, 2 lin. diame- 
tro, Bractez subulatz. —Bracteole setacee parve. Flores 
tetrameri 8-andri. Legumen non vidi.— British Guiana. 
Schomburgk. 
The above Mimose all belong to De Candolle’s section 
Eumimosa, of which I have before me near a hundred spe- 
cles, forming two or three groups very distinct from each 
Other as to the greater number of species, but which have 
intermediate forms which prevent my subdividing them with- 
out a more careful investigation than I am able at present to 
make. Some of them also run very much into the section 
Habbasia, the form of the pod and the number and arrange- 
ment of the spines being very variable. 
'The two following belong to De Candolle's Bataucaulon, of 
Which I have about twenty species including Acacid acantho- 
carpa, Willd., and some others hitherto considered as Acacia, 
but of which the ripe pod certainly breaks into distinct articula- 
tions leaving the sutures persistent. In this section (also 
characterized by the pod), there are certainly many very dif- 
ferent forms, which it will hereafter be found necessary to 
class in distinct groups. - - 
. . 958. M. micracantha (sp. n.); ramis subteretibus glabri- 
usculis, aculeis in striis longitudinalibus minutis uncinatis, 
foliis bipinnatis, petiolo inermi v. hinc inde minute aculeato - 
i et inter pinnas et foliola extrema glandulifero, pinnis 
Valde inaequilateris subtrinerviis glabris v. subtus ad venas — — 
