194 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 
forty years. In a cold frame the plant is deciduous ; in gentle heat 
sub-evergreen. 
I received it from New York, Upsala, Paris, Berlin, La Mortola, and 
Kew. 
The name has reference to its very acute petals. 
(6) Herhs. 
(i) Leaves flat. 
Of the six species placed here, the first four belong to the well- 
marked group Involucrata of Maximowicz, confined, except for the 
Chinese 5. Baileyi, to the Caucasus and Asia Minor. They are creeping 
perennials with opposite leaves, which are mostly comparatively large. 
While the species in cultivation all have red flowers, white blossoms 
are found in some of the other species. 
The remaining two species are Mexican plants without affinity with 
each other or with the preceding. 
spurium M.B. Stevenianum Rouy and Camus. 
stoloniferum S. T. Gmel. rhodocarpum Rose. 
proponticum Aznavour. longipes Rose. 
86. Sedum spurium M.B. (fig. no). 
5. spurium Marschall von Bieberstein, "Flor. Taurico-Caucas./' 1, 
352, 1808. Boissier, "Flor. Orient./' 2, 778. Hamet in Trd. 
Bot. Sada (Tiflis), 8, part iii. 11. 
Synonyms. — S. stoloniferum of many authors (not of S. T. Gmelin, see p. 196). 
S. portulacoides of gardens (not of Willdenow, which = ternatum, see p. 159). 
S. oppositifolium Sims, Bot. Mag., pi. 1807. 
Illustrations. — Reichenbach, " Flor. German.," 23, tab. 46. Bot. Mag., 
loc. cit. (white form), and pi. 2370. Revue Horticole, 1891, 523, fig. 137. (All 
rather poor.) " Gartenflora," tab. 818 (good !). 
Its creeping habit and opposite pairs of leaves, which are wedge- 
shaped below and rounded and bluntly toothed in upper half, about | 
as broad as long, and fringed with hairs, will always distinguish this 
species. Its ally, S. stoloniferum, may be separated easily by its smaller, 
more rhomboidal leaves of a lighter green and not margined with hairs, 
slenderer growth, bright-red stem, and especially by its flowers, which 
open widely like a star and are borne on a small lax inflorescence, while 
those of spurium are larger with semi-erect petals, and form a dense, 
flat inflorescence (compare figures 110 and iii). 
Description. — A sub-evergreen perennial, forming a large mat. Stems 
creeping, round, rough with annular leaf-scars, finely hairy, with many leafy 
ascending branches ; flowering stems reddish, about 6 inches high ; barren stems 
shorter with more crowded leaves. Leaves opposite, about i inch long, | 
broad, cuneiform-obovate, crenate-serrate in upper half, cuneate in lower half, 
shortly stalked, fringed with hyaline hairs, imbricated on the barren shoots, 
dark green. Inflorescence a flat, dense, terminal leafy umbellate cyme, of about 
4 forked branches with flowers in the forks, concave in fruit, uppermost bracts 
oblanceolate. Buds ovate-lanceolate, very acute, ribbed. Flowers ^ inch long, 
sessile, or lowest short-stalked, normally pink. Sepals narrow, slightly tapering to 
