PLATYSTEMON AND ITS ALLIES. 159 
torulose, glabrous, twisted 19. P. contortus. 
torulose, not twisted 
spar. i 
5. P. Petrinus. 
setose-hispid 6. P. rigidulus. 
minutely prickly 7. P. aculeolatus. 
oosely hirsute ; 
ig as short, stout 2 f. confinis. 
Stigmas long, slender ; 
Petals broad, obovate 23. P. Mohavensis. 
Petals narrow elliptical 24. P. anemonoides. 
; 
stout, sa trongly pilose 4. P. capsularis. 
slender, divergent, lightly pilose 49. P. nutans. 
Carpels short, few-jointed, glabrous ; 
divergent, the joints obscure 8. P. ornithopus. 
erect, the about 4 joints obvious P. sphaerocarpus. 
9. £. Sp 
**Carpels turgid, moniliform (barely torulose in nn. 35 and 36), 
mostly pale and glaucous in maturity, or with a dark dorsal line (wholly 
blackish in n. 18), the sides variously rugose or cristate-roughened. 
+ Petals and stamens deciduous. 
Filaments, all long and narrow, with rounded terminal lobes or none, 
Carpels with dark dorsal line 
sides indistinctly subcristate-rugose...........+5 11. P. communis. 
sides irregularly but distinctly wrinkled 12, P. tortuosus. 
sides turgidly undulate-rugose..............2++ 43, P, tessellatus, 
with delicate nag nerve, and EB 
straight lateral wrink 4, P. proximus. 
Carpels Teen Baen evenly and day 
18. P. nigricans. 
Carpels tong, marjen, green, with no 
sal line 
dark dor 
corky- -rugose, pa rous. 20. P. crenatus. 
btusely carinate, hirsute 21. P. commixtus. 
Filaments broad, at least the outer, and these sharply notched at 
summit, the anthers sessile between the acute lobes. 
Carpels glabrous; 
with obtuse midnerve and turgidly pikes 
tate-rugose sides 5. P. emarginatus. 
with no midnerve, the sides with more or 
less distinct thin mery wrinkles......++.-..« . P. arvorum. 
Carpels more or less hirsu 16. P. quercetorum. 
