224 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



The figure has been copied from that accompanying the original 

 description, enlarged to natural size. 



104. Sedum Chauveaudi Hamet (fig. 129), 



S. Chauveaudi Hamet in Lecomte, " Notulae Systematicae, " 1, 137, 

 1909. 



Synonym. — S. triphyllum Praeger in Journ. of Bot., 57, 54, 1919. 



A Chinese plant resembling S. sarmentosum Bunge and S. lineare 

 Thunberg in its free, creeping habit and leaves borne in threes ; but 

 the leaves are blunt and broadest near the apex (not pointed and 

 broadest below the middle), and its compact, very leafy, inflor- 

 escence is widely different from that of either of the species men- 

 tioned. It differs also in many floral characters, such as its spathulate 

 sepals. 



Description. — A glabrous, evergreen perennial, creeping vigorously and 

 emitting roots freely from all the older joints. Barren shoots 6 to 9 inches long, 

 leafy, tips ascending, stem round, red, slightly rough. Flowering shoots similar, 

 shorter, not rising above the barren ones, unbranched, leafy, densely mam- 

 millate in the upper part. Leaves of the barren shoots temate, equalling or 

 longer than the intemodes, oblong-oblanceolate, tapered below, scarcely stalked, 

 rounded at apex, fiat, slightly fleshy, i to J inch long, fV inch broad, spurred, basal 

 part erect, upper part spreading, beaded on margin, fresh green, pale below ; 

 young leaves often with a silvery margin ; spur blunt, generally deltoid, some- 

 times bifid ; leaves of the flowering shoots similar, the upper ones often alternate. 

 Inflorescence terminal, dense, very leafy, flat, i to 2 inches across, of three dicho- 

 tomous branches with flowers in the forks ; lowest flower shortly stalked, rest 

 sessile or subsessile ; bracts crowded, large, resembling the leaves, spurred, 

 edges beaded. Buds lanceolate, with a campanulate calyx, blunt, ribbed, streaked 

 with red. Flowers yellow, f inch across. Sepals unequal, very blunt, separate 

 nearly to the base, bluntly spurred, greenish yellow streaked with red, the larger 

 spathulate, \ inch long, the smaller spathulate-linear, \ inch long. Petals linear- 

 lanceolate, rather acute, hooded at the tip, f inch long, i^ to 2 times the sepals, 

 yellow, streaked with red on back. Stamens 10, nearly equalling the petals, 

 the epipetalous ones inserted | from the base of the petals, filaments yellow, 

 anthers orange-red. Scales small, quadrate, orange. Carpels slender, erect, 

 nearly as long as the stamens, greenish yellow, the slender styles occupying \ of 

 the length. 



Flowers August-October. Hardy at Dublin. 



Habitat. — Yunnan. Raised from seed collected by Rev. P^re 

 E. E. Maire near Tong-tchouan in 1915, labelled " Rochers a mi-mont, 

 altitude 2,990 metres." 



Hamet, perhaps by a slip, describes the flowering stems as erect, 

 18-22 cm. high, and rather robust, and the barren shoots as short 

 (3-6 cm.). On the strength of these and minor differences, I described 

 Pere Maire's plant as new {loc. cit.). If the dimensions of the barren 

 and fertile shoots are interchanged, this description will fit both 

 plants in the Leveille herbarium named Chauveaudi by Hamet, and 

 also the plants which I have had in cultivation for some years. Hamet 

 does not mention the dense mammillation of the flower-stems, a 

 conspicuous feature of the living plant, and sufficiently obvious in 

 dried material. 



