CRASSULACEAE. 167 



3. STYLOPHYLLUM Britton & Rose. 



Perennials with more or less branched rootstocks; 

 basal leaves linear elongated or flattened but always nar- 

 row, sometimes abruptly widened below into a broad 

 clasping base; flowering stems with long sessile leaves not 

 clasping at base. Calyx 5-lobed, the lobes ovate, equal 

 and small. Corolla campanulate, not angled, white, red 

 or yellowish, its lobes broad, thin and spreading, united 

 below into a tube. Stamens 10, borne on the corolla- 

 tube. Carpels 5, united below, generally spreading. 



3. S. densiflormn Rose. Glaucous throughout from more or 

 less branching rootstocks; leaves numerous, erect, nearly terete, 

 acute, 6-12 cm. long; flowering branches slender and weak; inflores- 

 cence a rather dense compact cyme, its ultimate branches rather 

 short, 4-8-flowered; pedicels short, 1-3 mm. long; calyx 2 mm. 

 long, its lobes twice as long as its tube, broadly ovate to orbicular, 

 obtuse; corolla white or pinkish, 6 mm. long, its segments spreading, 

 distinct nearly to the base. ( Cotyledon midicaule Abrams.) 



Frequent on rocky cliffs in the San Gabriel Canyon. 



Two other closely related species, S. insidare Rose and S. hassei 

 Rose, are found on Santa Catalina. The first has a very thick 

 woody caudex, 6-8 cm. thick, and short stout panicle branches, 

 the second has a slender elongated caudex, 2-3 cm. thick, and 

 slender panicle branches. 



4. DUDLEYA Britton & Rose. 



Caulescent or acaulescent perennials with flat linear 

 to ovate basal leaves and yellow, orange, red or rarely 

 white flowers, mostly in panicles. Leaves of the flower- 

 ing branches usually much shorter and relatively broader 

 than the basal ones, sessile or clasping. Calyx conspicu- 

 ous, 5-lobed, the lobes erect, linear-lanceolate to ovate, 

 obtuse to acuminate. Corolla nearly cylindric, or some- 

 what angled, the segments united below the middle, 

 erect, or their tips somew^hat spreading, obtuse to acumi- 

 nate. Stamens twice as many as the calyx-lobes, dis- 

 tinct. Carpels erect, many-seeded. {Cotyledon in part.) 



Leaves spatulate to ovate, rather thin. 



Leaves densely white-mealy; rosettes large. 1. D. pulverulenta. 

 Leaves green or glaucous, not mealy. 



Herbage glaucous. 2. D. minor. 



Herbage green. 3. D. ovatifolia. 



Leaves lanceolate to nearly linear, thick. 



Corolla pale greenish yellow. 4. D. brauntoni. 



Corolla reddish, at least in age. 



