EN 
Helipterum.] LXII. COMPOSITAE, 639 
Involuere hemispherical, the outer bracts small and scarious 9. H. heteranthum. 
Tuvoluere E xd EE the outer bracts genge 
h th AT NUES 
oug Podotheca fuscescens. 
Achenes cabo or r papi illos 
Outer bracts few, sessile, intermediate with subulate claws and 
radiating petal- vs lamine. 
DUE bracts enbaltte 9141-4 0v: nois IEEE MM 
Outer bracts br ad lE A. ¢ 
Outer eier? SCH ous or coloured, ; intermediate with 
broad claws We radiating petal-like 
Outer oon wholly scarious or petal-li em 12. H. Cotula. 
Outer bracts with a ee = te pi although coloured centre. 
s much compre Gen on hyalos or 
Achene 
: (See also the section Tin encella E Helichrysum, in whi ch the pappus is alm 
plumose, and Rutidosis Brownii,in which the pappus-scales are oe divided en bristles) 
Section II. Pteropogon. —Involucres ovoid, turbinate- -campanulate or ëmge 
_ the outer bracts Bate scarious or rigid, the intermediate or inner with or rarely with- 
.. 0ut radiating petal-like lamine or tips. Achenes villous. — Florets rarely above e 13. 
pou small with M De in compact terminal 
Achenes shortly hirs 
"omg d the bracts with eg pee as long as or longer 
: than the claws - 14. H. condensatum. 
: Lamine of the inner bracts shorter than their claws, those of 
: the outer ones min 
Involucre evild-tésblie 5 the E white . . . . . 15. H. polyphyllum. 
Involucre cylindrical, éi lam æ yellow . 16. H. Humboidtianum. 
Flower-heads on long peduncles or piens corymbose, ‘with e con- 
spicuous rays. enes densely silky-villous 
Outer involucral bracts with linear 
GE Lien E the aie as long as the outer m 
tips squa rather compa . 17. H. involucratum. 
vna turbinate-campanulate, the - as long as the 
outer bracts, linear tips erect . 18. H. tenellum. 
Involueres ovoid, the rays not half so don as the onter 
racts «ee TU, A p 
Outer involucral bracts with obtusely sci scarious t ips. 
Glabrous. Flower-heads on ~ peduncles. Involucres ; 
ovoid . , 20. H. strictum. 
Cottony. Flower-heads loosely | corymbose. Tnvalucres : 
adly turbinate . . 21. H. corymbiflorum. - 
bro 
Mower-heais e nearly sessile. Involueres nar 
D ranching plants, the flower- fioi is in an is mend leafy 
b. with v 
corymb.  Involueres TEM inall white 
Cottony, Florets 10 to "15 . +a « . Sem Spi Sg var. 
Nearly glabrous Ae . 22. H. pyg 
Stems $ to 14 ft. high. Flower-heads very small and nume- 
Tous in an — or oul an leafless — No : 
radiating ti . . 98. H. spicatum. , 
SECTION II. Monencyanthes.—Involucres ovoid, cylindrical or campanulate, the 
bracts scarious or coloured without any or with very minute scarious radiating tips. 
| Achenes glabrous or or papillose. Flower-heads often very small. 
| Flower-heads i in dense corymbose clusters almost contracted into 
heads, 
eg ot cottony herb of } to 1} ft. Flower-heads small and 
erous. Involucral bracts very woolly inside at the Ee 
