NEW OR NOTEWORTHY SPECIES. 217 
P. trifoliata ; but both that and the Mexiean one have an 
offensive mephitie odor; the Californian when fresh is only 
strongly aromatic, and its leaflets are broader and not pointed, 
or less so by far than those of P. trifoliata even, not to name 
the narrow and entire ones of that Mexiean and Texano-Neo- 
Mexican species of which the Benthamian name P. angusti- 
folia is probably but a synonym of the much older P. tomen- 
losa, Rafinesque, Fl. Ludov. 108 (1817). 
TROPIDOCARPUM CAPPARIDEUM. Annual, hirsute-pubescent, 
the branches few, decumbent, 6 to 12 inches long, very loosely 
racemose throughout: pedicels slender, spreading or ascend- 
ing, often more than an inch long, all axillary to pinnatifid 
leafy bracts : pods linear-oblong, 8 or 9 lines long, 2 lines 
thick, obtuse at each end, tipped with a conspicuous style, 
widely inflated (the cross section transversely elliptical), 2 
lines in diameter, conspicuously 6-nerved or almost -ribbed, 
partition wholly wanting; valves 4, those of the broad side 
deciduous at maturity, the other two persistent, united above 
by the style: placentze and seed-rows 4, one along each mar- 
gin of the broad persistent valves. 
Very common in the low and somewhat alkaline valley 
lands skirting the San Joaquin River, in Contra Costa County, 
California, where it was collected by the writer, late in March 
of the current year; the type of the genus, T. gracile, with 
its flat linear nerveless 2-valved pods, being common in the 
` hilly districts which lie back from the river. 
If it had been the present remarkable plant which had first 
fallen into botanists’ hands, the genus would probably have 
taken its place among the Capparidaces rather than with the 
Crucifer ; for the pods are extremely like those of a Capparis, 
and nothing at all resembling them has, in so far as I am 
aware, been hitherto admitted into the Crucifere ; but the 
flowers are strictly tetradynamous. 
STREPTANTHUS BARBIGER. Annual, erect, slender, a foot 
high, loosely racemose-paniculate, glabrous throughout, except 
