Page:The Botany of the Antarctic Voyage.djvu/341

Falklands, etc.] marginibus incrassatis revolutis, capitulis solitariis terminalibus sessilibus, involucri squamis obtusiusculis, flosculis tubulosis.

Hab. Strait of Magalliaens, Cape Gregory; Cwpt. King.

Suffruticulus humilis, ramosus. Caules tortuosi, 3-5 unc. longi, ramulis per totam longitndinem foliosis, -§-1 uncialibus. Folia 2 lin. longa, lin. lata, super medio sulcata, araclmoidea v. glabrata, subter laua appressa ineano- tomeutosa. Capitula plurima, erecta, unc. longa, discoidea, flosculis omnibus hermaphroditis. Involucrum campanulatum ; squamis irregulariter 3-serialibus, concavis, chartaceis, dorso arachnoideis, exterioribus brevibus late ovato-oblongis, interioribus longioribus, lineari-oblongis oblongo-lanceolatisve, disco paulo brevioribus. Receptaculum augustmn, subgloboso-capitatum, nudum nisi squanue paucee Hneares inter flosculos exteriores sparsae. Corolla omnes tubulosa3, 5-dentatee, dentibus linearibus obtusis recurvis. Antliera lineares, basi brevissime bisetosae, filamentis superne paulo incrassatis. Styli rami lineares, majusculi, obtusi, exserti. Pappi setae plurimse, rigidse, scabridas, subflavescentes. Achamium lineari-obconicum, subangulatuin, hispidulum.

Though differing from the C. amelloides in habit, and especially in the absence of ligulate florets, I am unable to point out any characters that will separate these two plants generically ; for the structure of the involucre, the occasional linear paleas on the receptacle, the achasniuni, the pappus, stamina and styles, are essentially the same.

When describing the Antarctic species of Senecio I shall allude more particularly to the radiate plants of that genus being natives of a damp, and the discoid of a (bier, climate. The same remark seems to hold good with Cliiliotrichum, the C. amelloides being confined to the humid atmosphere and soil of the Falkland Islands and Fuegia; whilst the present, and two allied discoid species, (both, however, too nearly related to C. humile), of which I subjoin descriptions, affect the arid plains of Patagonia.

C. humile is also a native of Cape Fairweather on the east coast of Patagonia.

2. ASTER, L.

1. Aster Vahlii, Hook, et Am. in Comp. Sot. Hag. vol. ii. p. 49. Hook. Ic. Plant, t. 486. A. Gilliesii, Hook. et Am. I.e. A. glabratus, Banks et Sol. MSS. in Mm. Banks, cum icone. Erigeron Vahlii, Gaud, in Ann. Sc. Nat. vol. v. p. 103, et in Fregc. Yoy. Bot. p. 135. B' Urville in Mem. Soc. Linn. Paris, vol. iv. p. 611. BC. Prodr. vol. v. p. 295.

Hab. South Chili, Fuegia and the Falkland Islands, abundant ; Banks and Solander, and all succeeding voyagers.

A very distinct species, particularly abundant in the moister parts of the Falkland Islands, and in Fuegia south of the Strait of Magalliaens on the eastern side, but ascending on the west coast of America as far as Conception