Spring Flora of Oklahoma 
xv 
8b. Ovary not 4-Iobed and not separating into 1- 
seeded nutlets at maturity. 
9a. Corolla more or less irregular ; ovary 2-celled. 
7«. SCROPHULARIACEZE. 161 
9b. Corolla regular or nearly so. 
10a. Ovary 3-celled: stisonas 3. linear herbs. 
73 POEEMONIACEiE. 140 
10b. Ovary 3-mary celled; stigma 1; shrubs 
or trees. 
48 . TEICACE^E. 98 
10c. Ovary 2-celled; sometimes 3-4 celled: 
styles 1-3, more or less united; mostly 
vines. 
79. CONVOLVULiACEiE. 138 
lOd. Ovary 2-celled; sometimes 3-5 celled: 
carpels several-many seeded; leaves 
usually alternate. 
78 , SOLANACEiE. 156 
lOe. Ovary 2-celled: style simple or 2-lobed, 
sometimes 4-lobed ; leaves stipulate, op¬ 
posite or verticillate. 
68. LOGANIACEiE. 132 
(ib. Ovary 1-celled. 
7a. Ovary forming a many-seeded capsule; smooth 
herbs with sessile, opposite leaves, rarely ver¬ 
ticillate or alternate. 
69 . GENTIANACELZE. 133 
7b. Ovary forming a few-seeded capsule; herbs usual- 
Iv hairy, with alternate or, rarely, opposite 
leaves. 
74. HYDROPHYLEACEZE. 141 
b. Fertile stamens fewer than the lobes of the corolla. 
6a. Corolla zygomorphic. 
7a. Ovules several-many; the ovary not forming 1- 
seeded nutlets. 
8a. Trees, shrubs, or woody vines; seeds winged. 
80. BIGNONIACE^E. 166 
8b. Herbs or rarely trees; placentae axile; seeds 
not on hooks. 
79. SCROPHULARIACE^E. 161 
8c. Herbs with opposite simple leaves; placentae 
parietal; seeds few, supported on hooks. 
81. ACANTHACEiE. 167 
7b. Ovules 2-4; the ovary forming 1-seeded nutlets. 
8a. Ovary not lobed, the style apical. 
76 . VERBENACE^E. 148 
