Ceratorjijne.] LXV. COMPOSITi^fi. 87l 



involute on the margins and produced at the top into incurved auricles ; those of 

 the disk ahorti'O'e. — Small annual. Leaves alternate. Flower-heads small, 

 terminal or axillary. 

 The genus is limited to a single species endemic in Australia. 



1. C. Obionides (Obione-like), Turcz. in Bull. Mosc. 1851. ii. 69 ; Benth. 

 Fl. Austr. iii. 555. An annual with erect slender branching stems not ex- 

 ceeding 6in., and often much smaller, more or less hirsute with soft simple 

 hairs. Leaves petiolate, obovate or oblong, under ^in. long, the upper ones 

 small, narrow and sessile. Flower-heads nearly sessile or on very short axillary 

 leafy peduncles. Involucre a little more than 1 line long, of 4 to 6 oblong 

 bracts. Florets about as long as the involucre, of which 3 or 4 females and 

 about as many sterile central ones. Achenes of the female florets very soon 

 growing out to at least twice the length of the involucre, remarkable for their 

 broad herbaceous wings, the incurved ciliate auricles at the top as long as the 

 corolla. — Diotosperma Drummondu, A. Gray in Hook. Kew Journ. iv. 275. 

 Hab.: Inland, border of N.S.W. 



71. ISOETOPSIS, Turcz. 



(Supposed resemblance to an Isoetes.) 



Involucres of few broad scarious bracts, the outer ones with linear leaf-like 

 tips. Receptacle small, without scales but with a few long hairs. Florets of 

 the circumference in several rows, female, tubular, slender but broader towards 

 the base, 2 or 3-toothed. Disk-florets hermaphrodite but sterile, the tabe ex- 

 ceedingly slender, expanded into a campanulate 4-lobed limb. Anthers short, 

 obtuse at the base. Style undivided. Achenes of the female florets nearly 

 terete, with a pappus of obtuse chaffy scales. Achenes and pappus of the disk 

 entirely abortive or rudimentary. — Dwarf tufted herb, the flower-heads small and 

 densely tufted within the grass-like radical leaves. 



The genus is limited to a single species endemic in Australia. Notwithstanding the foliage, 

 the affinity is evident with Cotula and Gentipeda. — Benth. 



1. I. graminifolia (Grass-leaved), Turcz. in Bull. J/o.sc. 1851, i. 175 t. 

 3 ; Benth. Fl. Aiistr. iii. 556. A dwarf, almost stemless densely-tufted plant, 

 the numerous small flower-heads sessile and densely crowded within the radical 

 leaves, which are linear, grass-like, 1 to 2 or even Sin. long, the inner ones 

 dilated and more or less scarious at the base, passing into the outer involucral 

 bracts, which have short green linear tips, the inner bracts broad and scarious, 

 without tips, about 2 lines long. Florets about as long as the involucre. 

 Achenes of the female florets rather thick, silky-hairy. 



Hab.: Inland, towards N.S.W. border. 



72. ERECHTHITES, Rafin. 



(A name of Dioscorides for a species of Senecio, often written Erechtite^.) 



(Neoceis, Cass.) 



Involucre of several nearly equal bracts, apparently in a single row, the 

 margins often scarious and imbricate, with a few small ones round the base. 

 Receptacle without scales. Florets all tubular, those of the circumference m 

 2 or more rows, female, filiform, 8 or 4-toothed or rarely a few outer ones very 

 slightly dilated at the tips, and deeper cleft on the inner side; disk-florets 



