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 304 OBSERVATIONS ON THE NATURAL FAMILY

related to Ozothamnus, from which it is to be distinguished chiefly by the paleae of its receptacle.

W I propose to name this genus in honour of M. Henri Cassini, whose well-conducted investigation of Composite has already thrown much light on the structure and economy of the more important parts of fructification of this difficult class: and especially of those organs from which the distinguishing characters of Cassinia are here derived.

I shall add the characters of the species of this genus, which, like Ozot/iamnus, admits of subdivision into two sections; and I have appended to it Calea spectabilis of Labillardiere, a plant corresponding with it in character, but differing very much in habit from all the other species.

��Cassinia. Calese sp. Labillardiere.

Involucrum imbricatum, scariosum, pauciflorum. Re- ceptaculum: paleis distinctis, squamis intimis involucri subsimilibus. Flosculi tubulosi, vel omnes hermaphroditi vel paucissimi feminei angustiores in ambitu. Antlierce (inclusae) basi bisetse. Stigmata apice obtuso subtruncato hispid ulo. Pappus pilosus v. penicillatus, persistens.

Frutices. Folia sparsa, scepius angustata, marginibm recurvis. Inflorescentia terminalis, corymbosa rariusve paniculata. Involucra alba mine cinerea raro aurea ; squamis intimis scepius apice comiiventibus, nunc patulis et radium brevem obtusum efformantibus.

t Involucrum radiatum {squamis intimis apice patulis).

1. C. leptop/iglla, foliis lineari-lingulatis subter ramu- lisque incanis, corymbis terminalibus, involucris turbinatis.

Calea leptophylla. Forst. Prodr. n. 287. Willd. Sp. PL iii, p. 1796. Persoon, Syn. ii, p. 406. Poiret, Encycl. Suppl. ii, p. 28. 127] Loc. Nat. Novae Zelandiae campi arenosi prope

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