232 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



S. mexicanum was grown in the Succulent House at Kew until quite 

 recently. The presumption is that Masters compiled his description 

 from the plant at Kew, where he obtained much of the material for his 

 monograph. There is no record as to the source of the Kew plant. 



The species came to me from New York Botanic Garden, and also 

 from the Villa Thuret, Cap d'Antibes (without a name), and I have 

 seen it at Bremen (labelled " sp. aus Mexico ") and Berlin (labelled 

 reflexum) ; also, to my surprise, as a pot plant in a cottage window 

 at Thomastown, in Co. Kilkenny, in Ireland. 



(2) Leaves alternate. 



(i.) Leaves spathulate, flat. 



S. Palmeri and 5. compressum are closely allied Mexican plants. 

 S. variicolor is Chinese, belonging to the group Japonica of 

 Maximowicz. The remaining four species belong to a well-marked 

 group of the Western United States, some of which have been placed 

 by Rose in a separate genus, Gormania. 



Palmeri S. Wats. yosemitense Britton. 



compressum Rose. Hallii no v. comb. 



variicolor Praeger. oreganum Nuttall. 

 spaihulifolium Hooker. 



108. Sedum Palmeri S. Watson (fig. 134). 



S. Palmeri S. Watson in Proc. Amer. Acad., 17, 355, 1882. " N. Amer. 

 Flora," 22, 69. 



One of the best and most distinct of Mexican Sedums, the abundant 

 drooping sprays of golden blossom contrasting finely with the glaucous 

 foliage. It is also one of the hardiest. 



It is close to S. compressiim, which, however, has acute leaves, 

 while those of Palmeri are rounded or quite bluntly pointed. The 

 latter are, moreover, of a different tint, being very glaucous, while 

 those of compressum are rather of a pale green, tending to be suffused 

 with red as they get old. 



In its bare, sinuous stems and rosette-like terminal clusters of 

 entire spathulate leaves, the plant recalls the European S. Ana- 

 campseros. 



Description. — A glaucous evergreen perennial of sprawling habit. Stems 

 rather sinuous, bare and rooting below, round and smooth, decumbent, with 

 ascending branches, 6 to 9 inches high. Leaves spathulate, entire, about i by f 

 inch, rounded or very bluntly pointed at the apex, glaucous, somewhat reflexed, 

 forming, save when in full growth, a loose terminal rosette. Flower-stem erect, 

 lateral (in early stage drooping and appearing terminal), slender, 2 to 4 inches long, 

 bearing small scattered leaves ; in strong plants several axillary flowering stems 

 are also produced from lower down the shoot. Inflorescence cymose, of 

 several drooping, wide-spreading branches, 1-4 inches long, bearing on their 

 upper side a double row of crowded flowers, each with an ovate bract, the lower 

 ones with pedicels equalling the flowers. Flowers f inch across. Sepals pale 

 green, unequal, lanceolate to linear-oblong, rather acute, the exterior one much 

 larger than the others. Petals orange, about equalling the longest sepal, lanceo. 



