140 CAI.IFORXIA ACADEMY OF SCIENCES. 



lena Bay are of different habit, less glaucous and more 

 punctate-scabrous. The stamens are four — one bilocu- 

 lar, the remainder unilocular. It may possibly be a dis- 

 tinct species. 



238. Begonia (Knesebeckia) Californica. — Herb- 

 aceous from a tuberous root, ^ m. high, glabrous, pur- 

 ple-tinged: lower leaves cordate, somewhat unsymmetri- 

 cal, sparingly pilose at the top of the petiole and on the 

 veins, equaling the petiole, 5-7 nerved and lobed, 

 dentate -serrate and setiferous, 6 cm. wide, 4 cm. long; 

 upper leaves very unsymmetrical, 2-3 nerved and lobed, 

 dentate -serrate and setiferous; stipules 6-7 mm. long, 

 3 mm. wide, broadly lanceolate setiferous, persistent, 

 those of the lower leaves unsymmetrical: cymes few 

 flowered : bracts broadly acuminate setiferous : pedicels 

 3-4 cm. long, bibracteolate at the middle with very set- 

 iferous deciduous bracteola^ : flowers pink or purple : the 

 male perianth 4-lobed, the two outer lobes broadly ovate, 

 7 mm. long, denticulate, the inner smaller; anthers obpy- 

 riform, emarginate : female perianth 5-lobed, the outer 

 ones sparingly denticulate, 5 mm. long, the inner smaller; 

 capsule 2 cm. long or more, 2-3 winged, the largest wing 

 roundish-deltoid, 10-12 mm. in greatest width, the oppo- 

 site wing 3 mm. wide, the dorsal small. — Sierra de San 

 Francisquito. 



239. Mamillaria sp. — A nearly globular species 

 found only in flower from San Jose del Cabo to the sum- 

 mit of the mountains. 



240. Mamillaria Goodridgii Scheer. — San Jose 

 del Cabo. 



241. Mamillaria Roseana Brandegee, Zoe, ii, 19. — 

 Common at low elevations. 



242. Cereus Pringlei Watson. — Common in the 

 low country. 



