ea ee wee] 
. 
(Vane ee ne oe 
mot 
Tribe Inuleae, 
Often diminutive annual or perennial woolly or cobwebby herbs with 
alternate stem leaves and a distinctive hay-like odor, Bracts of the in- 
volucre green and herbecoous (in Acenocaulon strongly incurled), becoming 
papery and persistent, opaque white or rose (in Psilocarvhus an inflated 
ac- containing the achene). Kay flowers none, Heads frequently unisexial 
aoe then dioecious, the vistillete corollas very slender, ha alr-like; ree 
ceptacle flat or convex, nalted, Anthers tailed at the base. Pappus of 
capillary bristles (in Adenocaulon and Psilocarp hus none), Achenes, of 
20 een ee ae ee 
Adenocaulon 4-= 5s rotate at maturity. . — _ 
ee et a ee 
a 
per huad 17. Psilocarrhnus Nutt. 
Sti reeeey 3mn.ais witn simple entire mostiy opposite leaves. Heads 
discoid, inconspicuous, borne in the forks of the branches or in terminal 
cluste-s, subtended by a loose cluster of leaves; involucres globose, the 
bracts softly wooliy, strongly incurved and hooded and bearing on the inner 
surface a membranous appendage, each completely enclosing a pistillate flower 
becoming at maturity an inflated obovate sac open on the inner side in the 
lower half. sStaminate flowers tractless, borne in the centre of tne head. 
Achenes ellipsoid or cylindrical, without a rappus, smooth, loose in the 
bladder like bract. 
’ 
leaves 5-10 mm. long; plants prostrate or nearly 
4 S50; mature bracts < mn. tall L Pe oresanus 
o Leaves 1-<.5 cm. long; plants erect; mature bracts 
A 3 mne tall 2. i. elatior 
od 
le. be. oresanus Nutt. —— 7 Low more or less prostrate annuals 
5-5 cm. tall, with very slender forking stems; leaves 5-8 mn. long, sessile, 
oblong-elliptical, obtuse at both ends, softly woolly; heads green ‘and incon- 
Syicuous, clotned with soft wool , berne—ia_the-fexie—of—the—branches—> 
subtended by several leaves; vracts of the involucre scarcely 1 mm. tall at 
anthesis, becoming < mm. tall and reticulately veined, the intervenous tissue 
often disappearing; staminate flowers scarcely 1 ms. tall, tipped with rose- 
purple; achenes shining, 1 mm. long. . 
In dried mud of vernal pools in the srassland. 
pees we thor uthonta popper, thre 
V 
——> Thatuna Hilis, spling ana Houck yO8U. 
2. be. elatior Gray. —? Smali erect annuals softly woolly through- 
out, ashy, 8-l¢ cm. tall, the stems slender, branching esyecially above or 
throughout; leaves narrowly oblon., or the upper ollanceolate, 1-2.5 cm. 
long, £-4 muse wide, all sessile, entire; heads globose,ax riliary, subtendea by 
a whorl ov leaves wort wool, ithrather close tanilod wood}; bracts 
, 
i.5 mn. tali at anthesis, increasing to 5 mm. in fruit, the appendace a 
scarious flap .7 mm. lon nes tistillate flowers pinkish or colorless; staminate 
flowers reddish rurple; achenes oblanceolate, 1 mm. long. 
€ rar 
-OSCOW, Finer 4.37% 
si 
Drying grounds ) 
798 
en Ne ee ee ee ee ely 
x Sait cea te iad eR aleaaie See be. we 
