814 LXV. COMPOSITE. [Baccharia. 



1. B. halimifolia (Halimus-leaved), Linn. Groundsel- tree. A bushy shrub 

 o£ from 6 to 12ft., glabrous or somewhat scurfy^glaucescent, the branches 

 angular. Leaves 1 to 2^in. long, obovate, coarsely angulate-toothed above, 

 cuneate at the base and" somewhat attenuate into a petiole, the uppermost 

 lanceolate and entire. Flower-heads of the sterile plant subglobose, pedicellated 

 solitary or aggregated ; the fertile somewhat loosely panicled, ovate-'oblong 

 bracts of the sterile involucre ovate; the inner ones elongated in the fertile. 

 Pappus of the fertile florets very long, white and silky. 



Hab.: This American shrub, which has been introduced for garden culture, is becoming 

 naturalised about the towns, and is likely before long to become a pest. The genus contains 

 about 250 species, several of which are supposed to possess medicinal properties in their native 

 countries, others are considered as good fodder for horses. B. cordifoUus, however (the 

 '■ Mio-mio" of the Argentine Republic, Banda Oriental, and Uruguay), is said to be poisonous to 



20. BLUMEA, DC. 



(After C. L. Blume.) 



Involucre ovoid or campanulate, the bracts imbricate in several rows, narrow- 

 linear, herbaceous or soft. Eeceptaole nearly flat, without scales. Florets all 

 tubular, those of the circumference female, filiform, usually very numerous, 

 those of the disk hermaphrodite, broader, usually few. Anthers with short fine 

 tails or points at the base. Style-branches filiform, papillose outside at the 

 end. Achenes small, usually somewhat compressed, striate or ribbed. Pappus 

 of numerous capillary bristles. — Annual or perennial herbs, usually villous woolly 

 or glandular-pubescent. Leaves alternate, toothed, lobed or rarely entire. 

 Flower-heads in terminal pyramidal or oblong panicles, sometimes contracted 

 into spikes or clusters, or rarely the heads solitary. 



A considerable genus, confined to the warmer regions of the Old World, some of them 

 ubiquitous and variable weeds, upon which a large number of spurious species have, been 

 fabricated, the real limits of the more distinct forms often very difficult to establish. Of the 8 

 Australian species, 3 appear to be endemic, the other 5 belong to some of the more common 

 Asiatic forms. The genus is very closely allied to Conyza and to Pluchea, having very nearly 

 the same florets and achenes, with the involucres and habit of the former and the tailed anthers 

 of the latter. — Benth. 



Flower-heads all distinctly pedunculate. 

 Glandular-pubescent, not tomentose. 

 Leaves all or almost all narrowed into a petiole. Usually above 1ft. 



high 1. C glandulosa. 



Stem-leaves sessile and stem-olaspiug. Radical leaves only petiolate. 



Rarely exceeding 1ft. in height 2. i". amplectenii. 



Usually not exceeding 1ft., pubescent or villous, notviaoid. Stem-leaves 



sessile and stem-clasping, mostly lanceolate. Peduncles rather long 3. B. intcgri folia. 

 Small. Leaves chiefly radical. Stem-leaves few, small, ovate. 



Peduncles long and filiform '. . 4. B. diffusa. 



Flower-heads, at least the upper ones, sessile and clustered. 



Leaves lanceolate, oblong or obovatc-oblong, the upper ones sessile. 



Involucre about 4 lines long 5. B.hieracijoUa. 



Involucre under 3 lines long 6. B. Cunniiighamii. 



Almost all the leaves petiolate and broadly obovate. Involucre 2 to 3 



lines long 7. B. lacera. 



Lower leaves large, runcinate-pinnatilobed. Heads crowded on very 



short peduncles or sessile . . . ' . ". 8. B.acutata. 



1. B. glandulosa (glandular), DC. Prod. v. 438 ; Benth. Fl. Auxtr. iii. 525. 

 An erect annual, often 2 to 3ft. high, more or less covered with a glandular- 

 viscid pubescence, with sometimes a little wool at the base of the leaves. Leaves 

 obovate ovate or lanceolate, acutely or coarsely toothed, green on both sides, the 

 lower ones often 3 to 5in. long and almost lobed at the base, on long stalks, the 



