496 COMPOSITAE 
spatulate, 4.5-8.5 cm. long, 5-17 mm. wide, the blade obovate to arp negn sree pte or acutish, 
callous- apiculate, tapering into a petioliform base ally two t imes ong, midvein 
scarcely costate, this dilated and indurate at base, brownish and smooth on the inner surface ; 
heads subcylindric eae villous at base, 8-20 (less in se eae? sere Wes rowded in terminal 
sinha ies 7- thick; details of structure eriey i: ly as in E. spars fons but pr (clgeatision 
of —— ied and thicker ; pistillate flowers few, with subtending obovate receptac vaya 
bracts, these concealed in the glomerules y the teak mathe: spreading receptacular bracts 
circling the wiih oe flowers, these with reddish tips; achenes smooth, sseonasiale 
obovoid, 2. Sin sa 
Drying are a roe Aine “Sonoran ee Butte County, Heaps south in the Sacramento Valley to 
n Joaquin nty i ent Inner Coast nt m Napa Cooks to Alameda County. 
ee locality : ey note dos i Valley. “Collected ty Hactwes: ‘April 
vax multicaulis DC. Pro 6. hey gear erat the ‘southwest has sia retested in various floras 
as growing in the Mojave ioe bien dhee Seas ders of California but no specimens have been found confirming 
its occurrence. An ro ast ete specimen eotected by Caden is apparently the nae of the presence of 
this name in the floras 
Tribe 8. EUPATORIEAE 
Achenes 5-ribbed. 
Pappus, at evs n part, of awns or Fue 
Involuc 
e 2-seriate, of subeq seed subherbaceous phyllar 130. Trichocoronis. 
Tavebiers imbricated in sev eal series, of dry and lngitinaly striped phyllaries. 
Achenes obi § fusiform, distinctly narrowed at apex; arnuals; leaves linear. 131. Malperia. 
Ache ou bi nase peiare matic or linear, not sania toward the apex; weniercess or shrubby plants; 
not line 132. Ho Aaneesivheg 
Pappus of auisied ‘bristi es 0 se 133. Eupatorium. 
Achenes 10-ribbed; involucral bracts striately nerved. 134. Brickellia. 
130. TRICHOCORONIS A. Gray, Mem. Amer. Acad. II. 4:65. 1849. 
Low herbs of wet places. Stems weak, usually ascending or sometimes floating. Leaves 
cgi or alternate, sessile, serrate or 3- lobed, thin. Heads small, discoid, cymose-panicled, 
solitary. Involucre 2-seriate, subequal, of subherbaceous phyllaries. Receptacle rounded 
hi ighly convex, naked. Corollas with slender tube abruptly dilated into the throat, 
5-toothed. Achenes prismatic, 5-angled. Pappus a minute setulose crown or of 5 short, 
weak awns with srernanee lacerate squamellae. Anthers subentire at base. Style-branches 
linear, the linear, see uispidulous appendages equaling the stigmatic portion. [Name 
G reek, meaning hai -apex, referring to the pappus 
& Peg genus of 3 species, oe the southwestern United States ‘sid Mexico. Type species, Ageratum wrightii Torr. 
1. Trichocoronis wrightii sane & Gray) A. Gray. Trichocoronis. 
Fi sa 1 
Ageratum wrightti Torr. & Gray, Proc. Amer. Acad. 1: 1848. 
Trichocoronis wrightii A. Gray, Mem. Amer. ae ad. IT. * ys 1849, 
Trichocoronis riparia Greene Besilies 1: 42. + 
Annual, oe or branched from base, the stems ascending to wseaincgpe 11-35 cm. long, 
villous ‘with lax many-celled hairs. Leaves below the ingorencence opposite, oblong or rhombic- 
oblong, 1-2.5 cm. long, obtuse, sessile and clasping, bluntly serrate, villous on the nerves s beneath ; 
heads tiny, choot tm m.h igh, cymose-panicled ; tiiohiere essentially glabrous ; corollas SuEpISh, the 
teeth white; a enna hispidulous above, mm. long; pappus- prtaties 5, weak, about 0.4 m 
long, sfcitine with minute lacerate squammelae 
ihc in wet ground along the Sacramento and pe Joaquin Rivers, California, and at Cienega near 
erside Same: also in Texas where it is native. Type locality: “‘Prope flumen Colorado Fexas: 
Coheceel by Wright. April—Sept. & 2 
131. MALPERIA S. Wats. Proc. Amer, Acad. 24: 54. 1889. 
Slender = slightly pubescent, freely branched. Lowest leaves opposite, the others 
alternate, linear, entire, sessile. Heads discoid, rather small, numerous, loosely cymose- 
icled. “ota about 5-seriate, strongly graduate, the phyllaries chiefly ES to 
; : : ; : 0 
oblong to obovate, erose, scarious squamellae. Anthers entire at base. Style-branches 
linear-clavate, elongate. [Anagram formed from the name of the collector, Edward 
almer.] 
A monotypic genus of California and adjacent Mexico. 
1, Malperia ténuis - Wats. oma or Brown Turbans. Fig. 5872. 
Malperia tenuis S. Wats. Proc. Amer. Acad. 24: 54, 1889. 
Hofmeisteria tenuis 1. M. Johnston, ite Calif. Acad. IV. 12: 1188. 1924. 
