Book Description

Ce livre historique peut contenir de nombreuses coquilles et du texte manquant. Les acheteurs peuvent generalement telecharger une copie gratuite scannee du livre original (sans les coquilles) aupres de l'editeur. Non reference. Non illustre. 1914 edition. Extrait: ...To be removed to genus Onuris. Add Macl., p. 447, after line 4: SARCODRABA Gilg & Muschler. Close to Draba, but easily separable through its turgid silicles; the midnerve of its valves strongly developed; and its fleshy leaves suffruticose; stem woody, thick, branching, sending up many floriferous stalks, leafy at top. Leaves crowded at base, above distant, thick, and rather large, serrate, incised. Flowers somewhat large, crowded in a dense raceme. Nectariferous glands form a ring. Fruits oblong, attenuate below, apically clinging to a cylindric style. Stigma cushion-like, bilobed, valves very convex, hard, with a raised median nerve, and thick placentiferous margins. S. Karraikensis (Speg.) Gilg & Muschler. Syn. Draba karraikensis Speg. Description p. 445, no. 13. In South Patagonia, central part of the territory of Sta. Cruz; by Rio Sta. Cruz on saline sandy clay; by Rio Leona (between Lago Argentino and Lago Viedma); and on saline sandy clay in the low mountains. A very variable species, divided by Spegazzini into three varieties, which, according to Gilg and Muschler, are rather to be considered as only forms, magna, media, minima; in fruit January. D. Add Macl., p. 447: ONURIS Phil. Crucifers, near Draba, like a small form of Hutchinsia; but the septum is as in Draba. The opening of the strong-nerved valves and the short, not-lobed style, separate it from Draba. Found in the mountains of S. Amer. Perennial herbs with thick, many-headed rhizome, and branches bearing many very dense heads of leaves, which are grass-like. Flowers white, in racemes, on a naked, scape-like peduncle; bracts linear, usually with the lower flowers. Nectariferous glands form a ring. Fruit ovate or narrower, ..."