52 NORTH AMERICAN FLORA [Volume 22 



18. STYLOPHYLLUM Britton & Rose, Bull. N. Y. Bot. 



Gard. 3 : 33. 1903. 



Perennials with more or less branched rootstocks ; basal leaves linear, elongated, terete, 

 or flattened but always narrow, 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 strongly spreading as in Sedum. 



Type species, Cotyledon edulis Nutt. 



1. S. viscidum 



2. S. virens. 



3. S. albidum. 



Leaves distinctly flattened, especially in the lower half. 

 Leaves viscid. 

 Leaves not viscid. 

 Leaves green. 

 Leaves glaucous. 



Calyx-lobes obtuse. 

 Calyx -lobes acute. 



Corolla bright yellow or sometimes tinged with red. 



Inflorescence flat-topped ; calyx-lobes broadly-ovate. 4. S. Traskcz. 



Inflorescence elongated ; calyx-lobes oblong-ovate. 5. S. semiieres. 



Corolla not yellow but somewhat reddish. 



Leaves rather broad for genus, acute. 6. 5". insulare. 



Leaves narrower than the last, obtuse. 7. S. Hassei. 



Leaves terete or nearly so except just at base. 

 Calyx-lobes acute.. 



Leaves broad at base ; rootstock thick. 8. S. edule. 



Leaves not broad at base ; rootstock slender. 9. S. attenuaium 



Calyx-lobes not acute. 



Calyx-lobes rounded at apex ; flowers white or yellowish. 10. S. Parishii, 



Calyx-lobes obtuse. 



Inflorescence compact. 

 Inflorescence open. 



11. .S*. densiflorum 



12. 5. Orcuttii. 



1. Stylophyllum viscidum (S. Wats.) Britton & Rose, Bull. N. Y. 



Bot. Gard. 3 : 33. 1903. 



Cotyledon viscida S. Wats. Proc. Am. Acad. 17 : 372, 1882. 



Caudex very short. Basal leaves numerous, narrowly lanceolate, acuminate, viscid, 

 obtusely triquetrous, the outer 7-9 cm. long, about 1 cm. wide. Scapes 3 dm. tall or taller, 

 slender to rather stout, their leaves similar to the basal ones but smaller, the uppermost 

 about 1 cm. long ; cyme compound, many-flowered, 8 cm. broad or less ; small slender- 

 peduncled cymes are also sometimes borne in the axils of the scape-leaves ; pedicels 1-4 

 mm. long; calyx-segments ovate-lanceolate, acute, purplish, 3-4 mm. long; corolla red- 

 dish, 8-10 mm. long, cleft to below the middle ; stamens and styles about as long as the 

 corolla. 



Type locality : Rocks near the Hot Springs, San Juan Capistrano, Los Angeles County, 

 California. 



Distribution : Southern California. 

 Illustration : Hook. Ic. pi. 1554. 



2. Stylophyllum virens Rose, Bull. N. Y. Bot. Gard. 3: 34. 1903. 



The thick and elongated branched stem sprawling over rocks, the lower parts clothed 

 with old leaves, the ends crowned by dense rosettes of bright green leaves. Leaves spread- 

 ing or often reflexed, shining, not glaucous, 5-9 cm. long, gradually tapering from the base 

 and there 10-15 mm. broad, fleshy but flattened throughout; inflorescence a weak many- 

 branched panicle ; calyrx-lobes ovate, somewhat acutish in living specimens ; corolla reddish, 

 campanulate ; carpels spreading. 



Type locality : San Clemente Island, California. 

 Distribution : Known only from San Clemente Island. 



3. Stylophyllum albidum Rose, Bull. N. Y. Bot. Gard. 3: 34. 1903. 



Basal leaves in a dense rosette, strap-shaped, widest at base, gradually tapering at the 

 apex, very glaucous, 4 cm. long, 1 cm. broad at base, very thick, the upper one third terete. 

 Flowering stems reddish, 2-3 dm. long, their leaves narrow, somewhat acuminate; inflor- 



