101 



UMBILICUS SEMPERVIVUM. 



{Sempervivum-like Navelwort.) 

 LINNEAN SYSTEM. ^ NATURAL ORDER. 



DECANDRIA PENTAGYNIA. CRASSULACE^E. — (Decand.) 



GENERIC CHARACTER. 



Umbilicus. (Dec.) Calyx 5-partitus. Corolla gamopetala cairspanulata 5-fida, lobis ovatis 

 acutis erectis tubi circiter longitudine. Stamina 10 corollas inserta. Squamce 5 obtusse. Car- 

 pella 5 apice attenuata, stylis subulatis. — Herbce Europse australis aut orientis indigense. Folia 

 rosulata aut alterna integerrima aut subdentata. Flores albidi aut flavi, ramosi nec cymosi. 



Calyx 5-parted. Corolla gamopetalous, campauulate, 5-cleft, with ovate, acute, erect lobes 

 about the length of the tube. Stamens 10 inserted into the corolla. Scales 5, obtuse. Carpels 

 5 attenuated at the apex, with awl-shaped styles. — Herbs natives of southern or eastern Europe. 

 Leaves arranged in a rose-like manner, or alternate, very entire or somewhat toothed. Flowers 

 whitish, or yellow, branched, not cymose. 



SPECIFIC CHARACTER. 



U. sempervivum ; foliis radicalibus rosulato-aggregatis carnosis cuneatis emarginatis glandu- 

 loso-pubescentibus ciliatis, caulinis sparsis oblongo-rotundatis convexis sessilibus ; caule depen- 

 denti ; paniculd laxa multiflora. 



Radical leaves aggregate, arranged in a rose-like manner, fleshy, wedge-shaped, emarginate, 

 clothed with glandular pubescence, ciliated ; those on the stem scattered, oblong-rotundate, 

 convex, sessile ; stem dependent ; panicle lax, many- flowered. 



Cotyledon Sempervivum. — Bieb. casp. p. 176 ; app. n. 46 ; ann. bot. ii. p. 444 ; fl. taur. i. 

 p. 351 . 



Descr. — Whole plant clothed with short, glandular pubescence. Radical leaves of a bright, 

 lively green, broadly cuneate, slightly emarginate, and disposed in compact circular tufts, like 

 the offsets of Sempervivum tectorum (common house-leek), a mode of arrangement which 

 is well expressed by the term rosulatus ; cauline leaves few in number, scattered, and 

 clothed like the radical ones with short glandular pubescence. Stem from eight to ten inches 

 long, the lower part glabrous, the upper portion pubescent, and terminating in a lax many- 

 flowered panicle. Flowers shortly pedicellate. Calyx red, deeply 5-parted, the segments acute, 

 slightly reflexed at the apex, and equal in length to the tube of the corolla. Corolla of a pale 

 red, bell-shaped, 5-cleft, lobes spreading, or rather reflexed (not erect), in which respect it does 

 not accord with Decandolle's generic character. Carpels 5, slightly pubescent, with an elon- 

 gated apex terminating in short awl-shaped styles with minute simple stigmas ; nectariferous 

 scales truncate, slightly emarginate, one of which is placed at the base of each carpel. 



