SUNFLOWER FAMILY 251 
A genus of about 40 species, natives of peereeets United States and Mexico. Type species, Tagetes 
papposa Vek (= Dyssodia glandulosa Cav. Des 202. 1802.) 
Involucres ary ae mm. high; stems sparsely leafy, the leaves alternate, much shorter to almost equaling the 
inter 
Phyllaries teen ly — leaves 3—5-parted into narrow = p nae 8B i fetegarceas 
Phyllaries long-attenuate; leaves simple, eae den 2. D. cooper 
Involucres “Ye aie m. high; ont densely leafy, the leaves cel and mostly longer than the pipette 
3. D. thurberi. 
1. Dyssodia porophylloides A. Gray. San Felipe Dyssodia. Fig. 5413. 
Dyssodia porophylloides A. Gray, Mem. Amer. Acad. II. 5: 322. 1854. 
Lebetina porophylloides A. Nels. Bot. Gaz. 47: 435. 1909. 
Ch ma porophylloides Rydb. N. Amer. Fl. 34: 166. 1915. 
Ill-smelling low shrub or shrubby aap et glabrous throughout, 3-6 dm. high, with numer- 
ous striate branching stems arising from the woody base. Leaves mostly alternate, much shorter 
than the internodes, 1-2 cm. long, thick, "planatess the lower Gatrowed to a Detioliform | Saas yedtisl 
into 3-5 ape to lanceolate, entire or incised divisions, the upper often entire or merely incised ; 
peduncles 3-8 c g; involucres turbinate, 12-15 mm. long, subtended by attenuate piece 
beacticts ‘ieirce tne: : phyllar ries 14-20, not oe abruptly ccute: terminal gland present and 
usually i tbe lateral ones ; rays are ge-yellow, about 5 mm. long, sometimes la cking ; disk-flowers 
orange or deep yellow Tabs ut 8mm. lon ng; ac keke ap pre em 3. mm. long; pappus-paleae 10-12, longer 
than the achene, dissects d into Dane bristles 
velly or cng slopes ria alluvial fans, Lower Sonoran Zone; along the Colorado River in San proinong od 
Coun te ag Ca liforn and the Colorado Desert in Rivera ie: iad San Diego Counties, and northern Lower Cal 
fornia, east to fe: a Arizona and Sonora. Type locality: San Felipe, San Diego County. March—June. 
5412. Nicolletia occidentalis 
5413. Leite 3 lloides 
ve Dyssodia coope’ 
5. Dyssodia eeurterd 
