86 LEAFLETS. 
which though distinct they are equal); (6) receptacle mostly 
enlarged under the fruit as in Thelypodium, but in neither Eu- 
clisia nor Streptanthus; (7) pods in certain species narrow and 
torulose as in Zhelypodium, and with small but plump seeds 
wingless and even marginless. 
PLEIOcARDIA, then, has a calyx peculiarly its own, a corolla 
nearest that of Zuclisia, though in several species with petals 
showing a well developed limb, thus inclining to Streptanthus, 
stamens half way between those of the two genera, and often 
with the pods and seeds of Zhelypodium, though nearer in floral 
character making any approach to the type of that genus. 
In arranging the sequence of species my custom is to place those 
first which seem to me to have the clearest claim to represent a 
genus; and therefore these stand as its type. 
P. TORTUOSA. S. tortuosus, Kell. Greene, Fl. Fr. 258. 
P. FOLIOSA. S. foliosus, Greene, Pitt. iii. 226. 
P. ORBICULATA. S. orbiculatus, Greene, Fl. Fr. 258. 
P. SUFFRUTESCENS. S, suffrutescens, Greene, Erythea, i. 147, 
Doubtless flowering at first as a biennial, after that enduring 
for several years and becoming suffrutescent. 
Those next following are, I think, all mere annuals, most of 
them in at least one particular as well fitted as the preceding 
group to stand as typical of a genus. I even apprehend their 
being placed, by and by, in the rank of a separate genus on 
account of their having the pods and seeds of Thelypodium. 
P. Brewer. S. Breweri, Gray, Greene, Fl. Fr. 259. 
P. HESPERIDIS. S. hesperidis, Jeps. Erythea, i. 14. 
P. GRACILIS. S. gracilis, Eastw. Proc. Cal. Acad. 2 Ser. ii. 285. 
I have not seen this plant, but Miss Eastwood’s diagnosis 
leaves no room for doubt as to its being a genuine P/leiocardia. 
P. FENESTRATA. Low slender glabrous glaucous annual, 
branched from the base, 6 inches high; proper foliage wanting 
in the very mature specimens, a few small ovate cordate-clasp- 
ing entire bracts on the branches: calyx very small, deep-pur- 
ple: corolla large for the plant, the petals with well developed 
broadly obovate limb and slender claw, the whole of a faint 
rose-color beautifully fenestrate with delicate dark-red veins : 
