Part? 3, 1916] CARDUACEAE: TAGETEAE 193 
39. Porophyllum fruticulosum Rydberg, sp. nov. 
A low shrub, less than 3 dm. high, with spreading flexuose terete branches; leaves filiform, 
fleshy, 1-1.5 cm. long; heads at the ends of the branches; peduncles 1-3 cm. long; involucre 
campanulate, 8-9 mm. high and as broad; bracts 7-9, oblong-linear, acute, rounded on the back, 
with few linear glands in 1 or 2 dorsal rows; corollas 6-7 mm. long, yellow, glabrous; tube 
much shorter than the cylindric throat; lobes short, ovate; achenes 5 mm. long, cylindric, 
hirsute; pappus yellow, 5-6 mm. long; bristles hispidulous. 
Type collected near Saltillo, Coahuila, November, 1902, Palmer 285 (herb. N. Y. Bot. Gard.). 
40. Porophyllum Greggii A. Gray, Pl. Wright. 1: 120. 1852. 
A perennial, with a suffruticose base; stems 2-3 dm. high, often flexuose,, terete; leaves 
alternate, numerous, filiform, 2-4 cm. long; heads solitary at the ends of the branches; 
peduncles 4-5 cm. long; involucre broadly campanulate, 10-12 mm. high, pale; bracts 5-8, 
elliptic or obovate-oblong, rounded at the apex, scarious-margined, with 2 rows of long glands; 
flowers many; corollas yellowish, 8-10 mm. long; tube somewhat shorter than the cylindric 
throat; lobes ovate; achenes 7 mm. long, hispidulous; pappus yellowish, about 1 cm. long; 
bristles hispidulous. 
Type Locatity: Valley of Parras, Coahuila. 
DisTRIBUTION: Western Texas and Coahuila. 
41. Porophyllum crassifolium S. Wats. Proc. Am. Acad. 24: 57. 
1889. 
A low undershrub; stem much branched, with terete spreading branches; leaves linear, 
fleshy, acute at each end, sessile, gland-tipped, 0.5-2.5 cm. long; heads solitary at the ends 
of the branches; peduncles about 1 cm. long; involucre broadly campanulate, 7-8 mm. high; 
bracts 5-8, oval, obtuse, with oval or rounded glands, rounded on the back; corollas 7 mm. 
long, yellow; tube much shorter than the cylindraceous throat; lobes ovate; achenes 3 mm. 
long, sparingly puberulent or glabrate; pappus tawny, 7 mm. long; bristles hispidulous. 
TYPE LOCALITY: Muleje, Lower California. 
DistRiBuTION: Coast and islands of Lower California. 
42. Porophyllum tridentatum Benth. Bot. Voy. Sulph. 30. 1844. 
A low undershrub; stem decumbent, much branched, usually less than 1 dm. high; 
leaves sessile; blades fleshy, cuneate in outline, 0.5—1 cm. long, 3-cleft at the apex, with one 
conspicuous gland at the end of each lobe, often apiculate; heads short-peduncled and solitary 
at the end of the branches; involucre broadly campanulate or hemispheric, 8 mm. high; 
bracts oval, with scarious margins, with several glands near the apex; flowers about 40; corolla 
yellowish, 6 mm. long; tube shorter than the trumpet-shaped, nearly cylindric throat; lobes 
ovate; achenes 3.5 mm. long, sparingly hispidulous; pappus yellowish, 5 mm. long. 
TyPE LocALity: Bay of Magdalena, Lower California. 
DistriBution: Coast of Lower California. 
EXCLUDED SPECIES 
KLEINIA SELLOI Spreng. Syst. 3: 438 (1826) is Stevia oxylaena. 
POROPHYLLUM DECUMBENS DC. Prodr. 5: 650. 1836. (Kleinia suffruticosa Lodd. Bot. 
Cab. pl. 1561. 1829. Not K. suffruticosa Willd. 1804. Kleinia decumbens Heynh Nom. 1: 
437. 1840.) This was described from cultivated material, and supposed to come from Mexico. 
It is more probably South American and the same as Porophyllum linifolium brevifolium (H. 
& A.) Baker. (See B. L,. Robinson, Proc. Am. Acad. 49: 508. 1913.) 
20. LESCAILLEA Griseb. Cat. Pl. Cub. 156. 1866. 
Undershrubs, with opposite or subverticillate branches, Ephedra-like, glabrous. Leaves 
all reduced to small opposite scales. Heads small at the ends of the branches, long-peduncled, 
discoid. Involucre narrowly campanulate; bracts 5-8, oblong, distinct, with a large dorsal 
