CHARACTERS OF SOME GNAPHALIOID COMPOSITÆ. 101 
thee, is remarkable, not only for its two-lobed gamophyllous general 
involucre, and densely villous receptacle, but for the total want of 
partial involucral scales, and for the reduction of the palea which 
subtends each flower to an excessively delicate and diaphanous mem- 
brane. The whole might well be taken for a simple capitulum, with 
the receptacle obscurely branched. Some of the partial axes, or capi- 
tula, if they must be so called, bear six or eight, others two or three, 
‘or the central only single, flowers. The radical or primordial leaves 
are verticillate, about four in number, very small. 
HYALOCHLAMYS, nov. gen. 
Capitula uniflora, homogama, in glomerulum sphericum involucro 
generali cinctum conglobata. Zavolucrum generale pluriseriale, e 
squamis latissimis tenuissime hyalinis orbiculatis retusis didymo- 
biconcavis, nempe axi opaco valido subintruso, apice spathu- 
læformi herbaceo. Axis seu receptaculum generale convexum, 
paleis persistentibus involucri squamas referentibus, sed sensim an- 
gustioribus atque nervo basi incrassato indurato, onustum, singulis 
capitulum unicum fulerantibus. Zuvolucrum partiale (capituli) 
4-phyllum, lanigerum, corolla brevius; squamis 2 exterioribus 
(palea fulerante contrariis) navicularibus, equitantibus, axi incras- 
sato corneo, marginibus hyalinis, persistentibus; 2 interioribus 
alternis, minimis, totum hyalinis, deciduis. Flos hermaphroditus. 
Corolla filiformi-tubulosa, basi dilatata indurata et apicem ovarii tegens, 
apice leviter ampliata 5-dentata. -duthere basi ecaudate. Styli 
rami apice capitellato-truncati. Achenium pyriforme, glabrum, 
basi attenuatum, calvum.— erba pygmæa, annua, furfuraceo-pubes- 
cens, rhizocephala, nempe glomerulo inter folia radicalia spathulata 
(interiora basi seu petiolo hyalino-alato) sessili, seu Mp re cc | 
Squamæ et paleæ glomeruli lanigeræ. Dd 
H. globifera. (Ic. Pl. tab. ined.) Swan River, Drummond.—The | 
globose glomerules of this curious little plant vary from one to three — 
lines in diameter, and the leaves are about the same length. Those 
which immediately subtend the glomerules, and form a sort of exterior 
involucrum for them, especially the proliferous ones, have a very short 
spathulate lamina, below which they are winged with broad hyaline 
margins; thus making a transition to the scales themselves, in which — 
the green lamina, or tip, barely projects, or, in the inner ones, is within — 
* 
