Plante Lindheimerianea. 35 
bony almond-shaped putamen, derived, we suppose, from the 
endocarp or lining of the carpel, though, for the want of young 
pods, we are unable to trace its formation. But in the ripe 
legume, these several husks, which are perfectly closed, are 
entirely unconnected with each other. ‘They are placed 
obliquely in the pod, of which they occupy nearly the whole 
breadth. The flattened, oval seeds (about 3 lines long) do 
not fill the cavity. On examining an Algarobo pod from 
South America (the fruit, as we presume, of A. dulcis,) we 
find that the seeds are invested by a similar covering, only 
that it is much thinner and paper-like, and apparently does not 
separate spontaneously from the pulp. We have not seen the 
fruit of Prosopis spicigera ; but we hope that this character 
may help to sustain the genus Algarobia, which, after having 
been separated from Prosopis by Mr. Bentham, has since, by 
the same author, been again reduced toa section of that genus. 
Our own species, however, would still have to be distinguished 
subgenerically from the typical Algarobia thus. $ PLEop¥- 
RENA. Legumen lineare, subteres, torosum, polyspermum ; 
seminibus singulis in nucleo endocarpico coriaceo inter pulpam 
nidulante clausis. —In a species of Srrompocarpa, collected 
by Capt. Fremont, (the curious fruit of which should separate 
it generically from Algarobia,) this papery lining is continuous, 
or merely collapsed where the seeds are deficient. 
234. Scuranxia aneusrata, Torr. & Gr. l.c. May — 
August. 
235. DesmantHus BracuyLosus, Benth. (Darlingtonia, 
DC.) ; the var. glandulosa, Torr. & Gr. under Darlingtonia ; 
— fruiting specimens, collected in July. 
236. Prunus etanpuLosa, Hook.; Torr. & Gr. I. c. 
* Low shrubs on sandy hills west of the Brazos, flowering in 
February. Fruit yellowish-red, as large as a middle-sized cher- 
ry.” Lindheimer. It is probably a Prunus, therefore, but 
the half-grown fruit upon one of our specimens is juiceless, 
and still clothed with the tomentum of the ovary. 
237, P. cracixis (2. sp.); ramis subinermibus ; foliis lan- 
