Page:The Botany of the Antarctic Voyage.djvu/29

Campbell's Islands.] v. subtorulosis medio uninerviis; replo latissimo; stylo brevi angusto; stigmate parvo. Semina sub 20, testa rufo-fusca.

A very distinct species, which will come under the small section with undivided leaves, to which also the C. bellidifolia, L., of Northern Europe, belongs; a plant to which the present is unquestionably nearly allied. In both these species the leaves vary much, being sometimes, but rarely, almost entire in this, whilst in the C. bellidifolia they are more seldom sinuate or lobed. The very great breadth of the septum, which is winged on both sides, and forms an acute angle with the valves, is a most remarkable character, peculiar, as far as I am aware, to this and the following species; at times it is almost as broad as the valves themselves. In South America this form is represented by C. chenopodiifolia, Pers., which is however a larger and caulescent plant, with very conspicuous showy flowers,—a similar species, or perhaps variety, inhabits the Andes of Chili, at an elevation of 10,000 feet. The var. &beta; was gathered in a very imperfect state with young flowers only. In general appearance it differs much from the normal form of the plant, and more especially in the flaccid membranous texture, long petioles, with shorter, rather broader, and nearly or quite entire leaves. It may prove distinct, but the specimens are not in a fit state for satisfactory determination.

III. Fig. 1, flower; fig. 2, sepal; fig. 3, petal; fig. 4, stamens and ovarium; fig. 5, stamen; fig. 6, siliqua; fig. 7, side-view of same; fig. 8, siliqua, with valve removed; fig. 9, seed; fig. 10, embryo:—more or less magnified.— IV. B. var. &beta;.

4. stellata, Hook. fil.; parva, acaulis, piloso-hispida, foliis confertis stellatim patentibus longe petiolatis elliptico-spathulatis integris v. inferne sinuato-pinnatifidis, floribus corymbosis, corymbis sessilibus, pedicellis gracilibus, siliquis abbreviatis linearibus compresso-tetragonis, replo latissimo, stylo brevi subulato. ( IV. A.)

Campbell's Island; on the d&eacute;bris at the base of precipices in very exposed places.

Planta pusilla, depressa, plagæ inclementis typica, tota pilis albidis subhispida. Radix perennis, ad collum crassa, deinde fusiformis et fibrillosa. Caulis 0. Folia omnia radicalia, numerosa (circiter 15–20), horizontaliter et undique stellatim patentia, longe petiolata, una cum petiolo &frac12;–1 unc. longa, 2–3 lin. lata, ciliata, subcarnosa, e petiolo sensim dilatato-spathulata, v. elliptico-oblonga, obtusa, integra v. basi sinuato-lobata, seu pinnatifida, lobis obtusis. Flores corymbosi. Pedicelli elongati, e pedunculo brevissimo inter folia radicalia orti, hinc scapos sæpe simulantes, sub 3 lin. longi, erecti; fructiferi magis elongati. Sepala lineari-oblonga, obtusa, 3-nervia, extus pilosa. Petala &frac12;–&frac34; lin. longa, obovato-spathulata, albida, calyce paulo longiora. Antheræ dorso glandula parva. Siliqua parva, erecta, &frac14; unc. longa, pedicellum subæquans, compresso-tetragona, recta v. paululum curvata, pilosa v. glabra, gradatim in stylum angustum acuminata; valvis planis medio uninerviis; replo latissimo ut in C. depressa. Semina quoque loculo 6–8, rufo-fusca.

The habitat of this plant is remarkable, as it grows only in the most exposed situations on the weather shores, about 100 feet above the sea. In the form of the leaves it resembles the C. pusilla, Hochst., an Abyssinian species, but these are here more crowded and spathulate, and the inflorescence is quite different. The siliqua, though shorter, has very much the same form as that of C. depressa.

IV. A. Fig. 1, flower; fig. 2, sepal; fig. 3, petal; fig. 4, stamens; fig. 5, siliqua; fig. 6, seed:—all magnified.  



1. decipiens, Hook, fil.; glabra, caule decumbente dichotome ramoso, foliis recurvis omnibus (etiam supremis) petiolatis obovato-rhombeis acutis apice callosis carnosulis siccitate punctis minutis elevatis asperis, petiolis subciliatis, pedunculis di-trichotomis (rarius unifloris) folia