Tas. 4624. 
MACHAERANTHERA TanacetiIFotia. 
Tanacetum-leaved Macheranthera. 
Nat. Ord. Compostta-AsTEROIDE®,—SYNGENESIA SUPERFLUA. 
Gen. Char. Oapitulum radiatum, ligulis foemineis (neutrisve ?) linearibus 3- 
nerviis. Involucrum pluriseriale, imbricatum, squamis herbaceis margine pallidis 
apice patulis. Receptaculum nudum ? (alveolatum et fimbriatum). Stigmata 
disci apice lineari elongato sterili. Anther@ corolla longiores, basi mutice, ap- 
pendice terminali cultriformi. _Achenia compressa (conica?), sericeo-hirsuta, 
pilis pappum externum simulantibus. Pappus pilosus, ineequalis, scaber—Herba 
perennis, pilis capitatis pubescens, facie Anthemidis. Folia alterna, pinnatifida, 
lobis dentatis. Capitula terminalia, solitaria, ramo apice nudo pedunculata. Ligule 
albe, ex H. et B. in sicco purpurascentes. Discus luteus. 
MACH#RANTHERA fanacetifolia. 
MACH#RANTHERA tanacetifolia. Nees, Ast. p. 224. De Cand. Prodr. v. 5. p. 262. 
Aster tanacetifolius. H. B. K. Nov. Gen. Am. v. 4. p. 95. 
Aster chrysanthemoides. Willd. in Spreng. Syst. Veget. v. 3. p. 588. 
A pretty and singular suffruticose Composita, with flowers 
nearly as large as a China Aster, and the leaves deeply pinnatifid, 
like some Anthemis, perhaps, rather than Zanacetum. It was 
seen by Humboldt cultivated in gardens in Mexico; but Dr. 
Wright appears to have found it wild in New Mexico, and from 
his seeds our plants were raised in the Royal Gardens of Kew. 
Planted in the open border they continued flowering during the 
= 
summer months. — 
Descr. A procumbent, or rather ascending, half-shrubby 
plant, with branching slender stems, nearly a foot long, every- 
where as well as the foliage slightly downy. eaves alternate, 
sessile, spreading, their outline oblong, but they are cut ina 
pinnatifid manner down to the linear rachis into a number of 
rather distant, spreading, linear, acute, entire or slightly serrated 
Segments: towards the flowers, on the branches, the segments 
become smaller, till the uppermost leaf is almost or quite entire 
JANUARY Ist, 1852. . 
