Image from page 33 of “An account of the genus Sedum as found in cultivation” (1967)
– Title: An account of the genus Sedum as found in cultivation
Year: 1967 (1960s)
Authors: Praeger, R. Lloyd (Robert Lloyd), 1865-1953
Subjects: Sedum; Crassulaceae
Publisher: Lehre [Ger. ] J. Cramer; New York, Stechert-Hafner Service Agency
Contributing Library: The LuEsther T Mertz Library, the New York Botanical Garden
Digitizing Sponsor: The LuEsther T Mertz Library, the New York Botanical Garden
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Text Appearing Before Image:
22 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. western United States. American botanists have created a number of new genera for the reception of these, but they do not appear to be generically distinct in the accepted sense, nor does this tend to facihtate their determination or the understanding of their relationships ; and I have retained some of them [Cremnophila, Clementsia, Sedasirum, Gormania) in Sedum, under which genus they were first described. Some of the others (e.g. Altamiranoa, Dudley a, StylophyUum, Villadia) appear best placed in Cotyledon. Other generic names now included in the genus Sedum are Rhodiola L. (now section Rhodiola) ; Anacampseros Tournefort (now section Telephium) ; Procrassula Grisebach (— Aithales Webb. & Berth), a small 5-stamened group included below in section Epeteium ; Telmissa Fenzl, characterized by being one-seeded, but closely approached in this respect by a few other species. The genus includes some well-marked groups, and others of less definite boundaries ; these groups being founded mainly on general
Text Appearing After Image:
Fig. 3.—Floral Diagram of Sedum (after De Candolle). growth-form. In the ensuing pages the generic subdivisions used, and their definitions, are as follows : Section I. Rhodiola Scopoh (char, amplific).—Perennial. Root- stock fleshy, crowned with leaves with a broad clasping base (often reduced to membranous deltoid or semi-orbicular scales^ or becoming so with age), from the axils of which annual leafy flowering shoots are produced. Flowers 4- or 5-parted, dioecious or hermaphrodite. Hardy plants, mostly Asiatic. (P. 26.) Section 11. Pseudorhodiola Diels.—Perennial. Flowers dioe- cious, 4-parted, and otherwise as frequent in Rhodiola. Vegetative parts and carpels as in Telephium, Hardy Chinese plants. (P. 73.) Section HI. Telephium S. F. Gray.—Perennial. Rootstock usually thick, branched, often of carrot-hke tubers, summit without scales. Stems mostly annual, produced from buds beside or above the bases of the stems of the previous year. Flowers hermaphrodite, 5-parted, white, red, purple, or green. Hardy plants, mostly Eurasian. (P. 77-) [Section IV. Giraldiina Diels.—Not in cultivation—two Chinese species only.] (P. 107.) Section V. Aizoon Koch.—Perennial. Rootstock thickened, roots slender. Stems annual (except S. hybridum). Leaves fiat.
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