550 COMPOSITAE 
1. Trixis californica Kell. California Trixis. Fig. 5953. 
Tents celiforasce Kell. ge Calif. Acad. 2: 182. sd 53, 1862. 
Bot. Calif. 2: 459. 
Trizis aapartifolia var. ee Gray, Syn. - N. Amer. 17: 410. 1884. 
uch bran sasag shrub about 0.5-1 m. high, leafy . to the heads, lower stems gray, 
upper aa chlets striate, tan, glandular- puberulent. Leaves alternate, sessile or subsessile, hen 
late to ovate- “te late, 6-15(20) mm. broad, 2-8 cm. felis sparingly appressed-puberulent on 
both surfaces, densely glandular especially beneath, midvein prominent below, the margins entire 
i on the older leaves; i i 
g 
yellow, about 1 ong; getienns dark, lon ps eyelivideic and narrowed above, densely 
widelay hesiaelous the pappus copious, straw w-color ie 
Rocky slopes and canyons wall Lower Sonoran Zone; ea n San Bernardino County and south through 
the Colorado Desert, California o Lo wer California sae ‘east ‘to gehen Texas and northern Mexico. Type 
locality: Cedros I Island, Lower Californie Feb.—June and Oct.— 
148. PEREZIA Lag. Amen. Nat. 1:31. 1811. 
Perennial herbs or rarely sriseonti ‘aoe (in ours) erect and leafy, arising from a more 
or less woody caudex more or less covered with felty, rust-colored woo eaves alternate, 
mostly sessile. Inflorescence single and terminal or of few to many heads in panicles, or 
: lu s 
lavender, or white. Corollas bilabiate, the outer lip 3-dentate, the inner wit free or 
strongly recurved segments. Anthers with tail-like appendages. Style- Seguches flattened and 
truncate at apex. Achenes linear-cylindric or fusiform, the pappus copious, of scabrous, 
white to OS eeuny ° or brownish bristles. [Name in honor of Lorenzo Perez, a pharmacist of the 
sixteenth centu 
genus of wet 75 species, natives of southwestern United aratee, Mexico, and Central America and of 
western South America. Type species, Vocdivicns magellanicum L, 
1. Perezia microcéphala (DC.) A. Gray. Sacapellote. Fig. 5954. 
Acourtia microcephala DC. es: 7: 66. 1838. 
Pavess microcephala A. Gra miths. Contr. 35: 127. 1852. 
Perezia sericophylla Millsp. & oe Field Mus. Bot. Ser. 5: 297. 1923. (Incidental mention) 
Stout erect perennials 6-14 dm. high, the striate stems densely leafy and glandular-scabrid. 
eaves thins ovate to elliptic-oblong, a m. long, sessile with a Ss d base, the larger cordate- 
claspi gin spinose-denticulate, chartaceo ous i a what 
——— -ve , glandular-scabrid or rulent on both surfaces; infloresc rat d, 
m 
ined i ence r 
ose-pan aralate easy bre cted ; heads about 10-12 mm. high, 10-20-flowered; phyllaries oblong- 
pe ie nceolate, mucronulate, glandu lar-puberulent, loosely imbricated in about 3 series; corollas 
lavender- dele white; achenes glandular- Poberutent, the pappus white. 
Common on dry slopes, Upper Sonoran Zone; San s Obispo County and the Channel Islands south t 
San Diego County, California, and siiacoar pated, eattornia. Type locality: California. Collected by Donpiar 
June— 
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5955 
5955. Hecastocleis shockleyi 
