Convolvulaceae 307 



5-lobed. Follicles usually thick, acuminate. Seeds usu- 

 ally comose. 



1. A. eriocarpa Benth. Erect, 5-8 dm. high; densely floccose- 

 woolly, the loose wool hardly deciduous except from the angled 

 stem below ; leaves not rarely ternate and the uppermost alter- 

 nate, elongated-oblong or the upper lanceolate, obtuse or subcor- 

 date at base, short-petioled, 10-20 cm. long; umbels few or 

 several, on stout peduncles; flowers dull white; corolla at first 

 woolly outside; the lobes longer than the pedicels; column short 

 but distinct; hoods shorter than the anthers, rather spreading, 

 ventricose, semiorbicular in outline and open round to near the 

 middle of the back, the summits produced inwardly into an acute 

 angle or tooth barely enclosing the filiform acute horn ; ovaries 

 glabrous, the summit of the styles villous; follicles more or less 

 woolly. 



Frequent on dry mesas and in the foothills, also occasionally in the pine 

 belt of the San Gabriel Mountains. 



2. A. Mexicana Cav. Stems 6-12 dm. high, glabrous or 

 sparsely puberulent; leaves in whorls of 3-6 or the lower and 

 uppermost opposite, linear to linear-lanceolate, 6-15 cm. long, 

 4-12 mm. broad, short-petioled ; umbels many, corymbose, densely 

 many-flowered, on peduncles longer than the pedicels; flowers 

 greenish-white; corolla-lobes 4 mm. long; hoods broadly ovate, 

 entire, shorter than the anthers, exceeded by the stout subulate 

 incurved horn. 



Frequent on the mesas and in the foothills. 



Family 77. COITVOLVTJIjACEAE. MORNING-GLORY 



FAMILY. 



Herbs (some tropical species shrubs or trees), the 

 stems twining or ascending, trailing or erect, with alter- 

 nate exstipulate leaves and regular perfect axillary, 

 cymose or solitary flowers. Calyx 5-parted or 5-divided, 

 usually persistent, the segments imbricated. Corolla 

 often funnelform or campanulate, the limb 5-angled, 

 5-lobed or entire. Stamens 5, inserted low down on the 



