492 COMPOSITAE 
bovoid in outline, somewhat compressed, saccate, reticulate, with sides meeting in the 
center, woolly, bearing below the rounded tip on inner side a small, ovate, horizontally 
tro m sd f ; es 
p ou 
receptacular bracts; corollas with slender tube and funnelform or funnelform-campanulate 
throat, 4—5-toot “ ovaries abortive, epappose. Anthers Sagittate-auriculate, with short 
cute auricles, those of ceibe anthers connate. Style-branches in hermaphrodite flowers 
slender, obtuse, hispidulo Name Greek, meaning naked chaff ; erongty explained by 
ae all as meaning deuier chaff, in allusion to the membranous pales a 
of about 5 species. In addition to the following, one occurs in Chile. Type species, Psilocarphus 
PRE Ta Ne utt., as to ya North American plants. 
Bracts i etapie a achenes comparatively thickly and loosely —— pov ag ~— : _ long; tomentum of 
whole comparatively long and loose; heads larger, 3- five Nes ™ ually 
— doce prostrate; leaves mostly 5-15 mm, long; ach 1. P. brevissimus. 
nts more or less erect; leaves mostly 12-25 mm. long; achenes a ARG ‘shine or elliptic-oblong. 
‘atio 
Bracts sont the eres a igre Phage thinly or Sercitd woolly, about 2 mm. long; ienaidieien of meee plant 
mparatively close; heads smaller, about 3—5 mm. thick, usually numerous. 
Plants closely subsericeous ie: leaves Sale 10-22 mm. long, linear or linear- a ype bag 
ellipsoid-cylindric ES OF 
Plants — thinly grayish-woolly; leaves 4-10 mm. long, spatulate, oblong (ovate elipticovate. in the 
iety) ; achenes obovoid-ellipsoid. . P. tenellus. 
- Psilocarphus brevissimus Nutt. Round or Dwarf Woolly-heads. Fig. 5863. 
Psilocarphus Palomas Nutt. Trans. eee oe re a. 7: 340. <—s 
Sarees globiferus Nutt. loc. cit. Bert. ex DC. 
cy wate depicts Reany i in Gay, Fl. chil en 110. 1849; Atlas, Se ‘ “i856 
A. Gray, Syn. Fl. N. Amer. ed. 2. 12: 
P il ph var. lied Seosees, FL W. Mid. ee see 1901. 
Dwarf, tals whitish-woolly annual, simple and 1-headed or with es ae branches up 
Leaves s spatulate to lanceolate, 5-15 mm. long, 1.5-3 m wide, pee babi 
: i m an 
he he 
. is oping more, their enclosing brac — mm } Ong woolly, bearing on 
inner “~ near the top an ovate, = rizontally inflexed or ‘ofte scarious pe ell about 
0.5 mm. long; hermaphrodite flowers about 6-11; achenes subeyiieaee terete, 1.3-2 mm. long. 
Dri vie beds of v pools and moist ‘elke Arid Transition and Sonoran Zones; teil common in eastern 
Wishes on, scthees “Idaho, and western Montana and in eastern and southern Oregon —— 
through California to second Me: ee California and n eer o Loe California; Fal Chile and Argent 
Type locality: ‘Plains "s the Ore; Se a] River, in tiendaiad tracts.”” April-Jul 
Petit “hgpomcal brevissimus var tifldrus Cronquist, Research Sead, oar Coll. Wash. 18: 80. 1950. Plants 
tending to be er the eaves more prs co linear-oblong; woolly pubescen the heads rather sparse and close; 
wiatiione: eeics of of the att many, about 100. In Py same habitat as tee eeeetion ag Conots Alameda 
and Santa Clara Counties, California. Type locality: dried vernal pools, Suisun, Sol 
2. Psilocarphus elatior A. Gray. Tall Woolly-heads. Fig. 5864. 
a oreanens var. elatior A. Gray, Proc. Amer. Acad. ef — 1873. 
A. Gray, Syn Fl. N. Amer. ed. 2: 12: 448 
-woolly annual 15 ¢ cm. high or less, erect or sometimes diffuse, with few branches, de- 
; olaints sometimes 1 cm. high. Leaves oblanceolate or the upper linear or linear-oblong, 
ua 
: . wide, acute or obtuse, c 
arcely narrowed to base ; heads solitary or clustered in the forks and at tips of stem and branches, 
mm. thick, usually about half as long as the involucrating leaves ; pistillate —— about 40-50 
above , 2.6-3 mm. lon 
or more, the receptacular sctape ee loosely woolly especially above ng, bearing 
on the inner side below the tip an ovate, horizontal, introrse, scarious appen ndag: £0. 5-1 mm. long; 
staminate flowers , their coniiad usually reddish- -tipped; achenes fubelindcie slightly com- 
pressed, a mm. long. 
Fields and moist places, Tran m Zone; Vancouver Island, om ia. the jeues along the Pacific Slope 
to southern Oregon where it nao age sr ak less common in easter ashin, and adjacent Idaho. Type 
locality: [Portland], Oregon. Collected by Hall. May—Aug 
3. Psilocarphus oregénus Nutt. Oregon Woolly-heads. Fig. 5865. 
Psilocarph g Nutt. Trans. Amer. Phil. Soc. IT. 7: 341. 1841. 
er, much-branched annual at first erectish, becom g diffuse and forming mats up to 
25 cm. ac oss, closely sericeous-woolly. Leaves Pik Sor og spatulate, mostly 8— m , 
1 de, gradually narrowed int tiolif base, obtuse or acutish, callotis-apiculate ; 
head mostly solitary in the forks and at tips of stem and bra es, 3-5 mm. thick, much surpassed 
by the involucrating leaves; pistillat. rs much as in P. tenellus, - a i h head, 
what larger, at maturity — 2-2.4 mm. long, the scarious dage rather 
t t app 
smaller, often borne near the middle of the inner face of the bract, achay hor peeetelts introrse or 
deflexed ; achenes more slender, pikeesd-cohaiac terete, 0.8-1. 2 mm. lon 
