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14b ANALYTIOAL KEY. 
DIVISION 2. GAMOPETALA. 
A. Ovary Inferior (adherent to the calyx) or largely so. 
Stamens more numerous than the lobes of the corolla, 8 or 10. 
Distinct and free from it, or nearly 50.............e0+ eee ee eeakeon Ericacez, 
Stamens as many as the lobes of the corolla (5, rarely 4), united into a tube. 
Flowers in an involucrate head, resembling a single blossom...... Composite, 
Flowers separate in racemes or spikes; ovary slender ..........- Lobeliacez, 
Stamens as many as the corolla-lobes, distinct. 
Nearly or quite free; leaves alternate, no stipules........... Campanulacee, 
Inserted on the corolla; leaves opposite or whorled. 
With stipules, or in whorls, entire ..... 0.2.2.0... eeeeeees Rubiacez, 
Without stipules, opposite. Calyx with minute lobes. ..Caprifoliaceze, 
Prostrate herbs. Abronia in...... cece e cece eee eee Nyctaginacez, 
Stamens only 3, fewer than the lobes of the corolla. 
Leaves opposite; stamens distinct; flowers minute ............ Valerianacee, 
Leaves alternate; stamens united; fruit prickly.............. Cucurbitacex, 
B. Ovary Superior (free from the calyx) or nearly so. 
1, FLOWERS REGULAR or nearly so. 
* Stamens, twice as many as the lobes of the corolla. 
Stamens 8-10, distinct; corolla campanulate or ovoid...........-.--...Bricacez, 
Filaments united for half their length; corolla nearly polypetalous.... .... Styraz, 
Pistils or styles as many as the petals; fleshy herbs...... ..-......- Crassulacea, 
** Stamens as many as the lobes of the corolla and opposite them. 
Styles 5; long-clawed petals, scarcely united......... die eatelss 2% Flumbaginacee, 
Style 1; corolla lobes, reflexed or rotate.... ........+. see aoe cies Primulacee, 
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Stamens as many as the lobes of the corolla and alternate with them. 
Style and stigma one, leaves entire (lobed in the first). 
Leaves mostly radical; flowers on a scape....... Romanzofia in Hydrophyllacee, 
Leaves all radical; flowers in a spike; 4-lubed corolla scarious.....Plantaginacea, 
Leaves alternate; flowers mostly in coiled spikes; ovary 4-lobed....Borraginacez, 
Leaves alternate; flowers rotate to funnelform; ovary 2-celled......... Solanacee, 
Leaves opposite; flowers in cymes; ovaries 2............. eee eee eee Apocynacee, 
Leaves opposite or whorled; flowers in umbels; ovaries 2.... ....Asclepiadacez, 
Style 1 or none, stigmas 2. 
Leaves opposite or whorled, sessile, entire, or...... ....... 
Leaves alternate, 3-foliolate, on a creeping rootstock ............ Sepenaree: 
