g 
De 
EE ioe. 
VO NEST ART Des 
LXII. COMPOSITA. 557 
49. MYRIOCEPHALUS, Benth. 
(Hyalolepis, DC. ; IRE nip A. Gray ; Gilberta, poe ; Lamprochlena, Elacho- 
pus, and Polycalymma, F. Mue il.) 
Flower-heads ae, numerous de sessile on a broad very flat re- 
` ag in a dense cluster or compound head, surrounded by a general invo- 
re of numerous wie bracts in ge rows, each — ith a scarious 
tip or radiating appendage. Partial heads 1- or few-flowered.  Involuere of 
; rod 
slender, 3- to 5-toothed. Anthers with more or less gc éen points or tails 
at the base, Style-branches nearly terete, truncate. enes more or less 
compressed. Pappus none or of 1 or more awns or bristle. like scales, simple 
or more or less plumose.— Herbs, either annual or with a perennial or wood 
base, often hoary or white, especially when d un with woolly or cottony 
hairs, eaves alternate, entire. Clusters or ound heads terminal, 
usually globose or hemispherical ; the flat rier: sodium so broadly 
dilated that the outer flower-heads are reflexed. 
enus is nga to Australia. It differs from Angianthus i in the more perfect general 
eh and more developed common receptacle, the partial involueres s ometimes reduced 
2 bracts with a single floret, so as in some species to usd the compound head of Am 
cephalus in close analogy to the simple head of Helichrysu 
Appendages of me general involucral bracts under 1 line e or 
iuconspieu 
Dwarf sia: niivie much Se than the flower-heads. Par- 
tial heads 1-flowered. Pappus of 1 very fine awn or none 1. M. rhizocephalus. 
Plants of 4 to l ft. Leaves under 1i in. long. Partial heads 4- 
o 6-flowered. Pappus of microscopic scales, 
Wë ndages of the EM poe bracts minute and yel- 
lowish or inconspicu . M. nudus. 
Appendages of the peer involueral b bracts white and nearly 
ine lon 
Decumbent or E plant, under 6 in. Leaves small, mostly 
cuneate or spathulate. Partial heads 4-flowered. Papp 
e 
. M. appendiculatus. 
lto4 bristle. like scales 4. M. Rudalli. 
Appeudages of the general breuiter bracts 1 to 2 lines long, broad 
and very cons picuous. 
Appendages yellow. Partial-heads 1-flow zi nthe > gla- 
rous. Pappus of 5 to T E m— rom the base or E 
at the end de . 5. M. gracilis. 
Ti oh ilaa ds 2 8-flowered. 
erbaceous and flaccid. Partial heads 2- or 3-flowe ; 1 
Achenes ee Pappus of 1 to 6. M. helichrysoides. 
i A bristles .-- 
Shrubby at the base ma rigid erect branches. Partial heads 
2-flowered. Achenes glabrous. Pappus of several bristles 
tipped with transparent globules 
poten and tall. Partial heads 5- to 8- flowered. Achenes 
ooly. Pappus of numerous ciliate bris 
7. M. suffruticosus. 
8. M. Stuartii. 
l1. M. rhizocephalus, Benth. small E annual, the stem from 
ito? or 3 in. Dr n with the os sheathing bases of the leaves. 
