MANUAL OF THE PLANTS OF WESTERN TEXAS, 
ANALYTICAL KEY TO THE ORDERS. 
Division II, GAMOPETAL: those with both calyx and corolla, the 
latter with its petals more or less united. 
A. Stamens more numerous than the lobes of the corolla. 
Ovary 1-celled...... 2.22. cece ee ee cn cence cece ee eeeeee STYRACES, 258 
Ovary 3 to many-celled. 
Stamens free or nearly free from corolla.......... ween eee eee ERICACE, 253 
Stamens inserted on base or tube of corolla. 
Filaments 1 to 5-adelphous at base; anthers 2-celled........ STYRACEA, 258 
Filaments wholly distinct...................2222...---.-4-- EBENACE, 257 
Filaments in pairs at each sinus; anthers l-celled...... CAPRIFOLIACEA, 155 
B. Stamens (fertile ones) as many as the lobes of the corolla and opposite them, 
Ovary 5-celled; corolla appendaged with scales inside. ............ SAPOTACEA, 256 
Ovary 1-celled; pod several to many-seeded; style 1..........--- PRIMULACES, 255 
Ovary 1-celled; utricle 1-seeded; styles 5.22. .....2....---. 244. PLUMBAGINE®, 254 
C. Stamens as many as the lobes of the corolla and alternate with themor fewer. 
1. Ovary adherent to the calyx-tube (inferior), 
Stamens united by anthers into a ring or tube, 
Flowers in an involucrate head... ...... 2.20.22. .02000 eee eens ComposiTa&, 164 
Flowers separate, not involucrate; corolla irregular......-. -. LOBELIACE, 250 
Stamens separate, free from corolla or nearly so, as many as its 
lobes; stipules none.... 22.2... ce eee eee eee eee CAMPANULACE.®, 252 
Stamens separate, inserted on corolla, 
1 to 3, always fewer than corolla-lobes,.............. 2000-008 VALERIANEX, 163 
4 or 5; leaves opposite or whorled. 
Leaves whoried and without stipules ) Ru ae 
Leaves opposite or whorled, and with stipules 4 ~***>-7*" UBIACE.®, 157 
Leaves opposite, without stipules (petioles sometimes 
with stipule-like appendages).............2...... CAPRIFOLIACEE, 155 
2. Ovary free from the calyx (superior ). 
* Corolla irregular; stamens (with anthers) 4 and didynamous, or only 2. 
Ovules and seeds solitary in the (1 to 4) cells. 
Ovary 4-lobed, the style rising from between the lobes.........-. LABIAT#, 330 
Ovary not lobed, the style from its apex..................... VERBENACE, 326 
Ovules numerous or at least as many as 2 in each cell. 
Ovary and pod 1-celled, 
With free central placenta; stamens 2._.............. LENTIBULARIE, 317 
With 2 or more parietal very many-seeded placentie; sta- 
mens 4...... 0.2202. -2-2 02 ee eee eee eee OROBANCUACE.E, 316 
Ovary and fruit more or less 4 or 5-celled........-2.....2....- PEDALINE, 319 
Ovary and pod 2-celled, but the 2 placentie parictal..... 2... BIGNONIACE.®, 318 
Ovary and pod 2-celled; placentie in the axis. 
Seeds rarely few, not on hooks............-...-.-... SCROPHULARINE, 304 
Seeds few, borne on hook-like or other projections. ...... ACANTHACE, 319 
JUNE 1, 1892 
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