146 CRASSULACEuE. [Till*, a. 



Sany heaths, rare, Norfolk to Hants and Devon ; Channel Islands ; fl. June- 

 July. — Annual. Stem 1-2 in., tufted, decumbent, glabrous, reddish ; 

 branches slender, leafy and flowering throughout. Leaves thick, concave, 

 obtuse or apiculate. Flowers rarely 4-merous. Sepals ovate, acuminate, 

 green. Petals smaller, subulate, white. Scales 0. Follicles constricted, 

 2-seeded. — Distrib. W. Europe from Holland southd., N. Africa. 



2. COTYLEDON, L. PENNYWORT, NAVELWOET. 



Herbs or small shrubs. Leaves alternate rarely opposite, sometimes pel- 

 tate. Flowers in terminal spikes or racemes. Calyx 5-parted. Corolla-tube 

 urceolate or cylindric, terete or 5-angled ; lobes 5, small, twisted in bud. 

 Stamens 10, inserted in the tube of the corolla. Scales 5, linear-oblong or 

 4-angular. Carpels 5 ; styles filiform ; ovules many. Follicles many- 

 seeded. — Distrib. W. and S. Europe, all Africa, temp. Asia, Mexico ; 

 species 60. — Etym. kotvXt), from thecwp-like leaf of some species. 



C. Umbili'cus, L. ; leaves peltate orbicular crenate, raceme long. 

 Rocks and walls, especially on the W. coasts from Argyll to Kent and Corn- 

 wall ; ascends to 1,000 ft. in Wales ; (absent from the E. counties) ; Ireland ; 

 Channel Islands ; fl. June-July. — Glabrous, succulent. Rootstock tuberous. 

 Stem 6-18 in., simple, stout, terete. Radical leaves 1-3 in. diam., petioled, 

 depressed in the centre ; cauline spathulate, upper cuneate. Raceme con- 

 tinued almost throughout the stem, sometimes leafy (var. folio'sa) ; bracts 

 minute ; pedicel short, slender. Flowers close-set, drooping, green. Corolla 

 cylindric, shortly 4-5-lobed. Stamens adnate to the corolla-tube, included. 

 — Distrib. From France southd., W. Asia, N. and trop. Africa. 



3. se'dum, L. Orpine, Stonecrop. 



Succulent herbs, erect or prostrate. Leaves alternate rarely opposite or 

 whorled. Flowers cymose, rarely axillary and solitary, sometimes dioecious, 

 honeyed. Calyx 4-5-lobed. Petals 4-5, distinct. Stamens 8-10. Scales 

 4-5, entire or notched. Carpels 4-5, distinct or connate at the base ; 

 styles short ; ovules many. Follicles many- or few-seeded. — Distrib. 

 N. temp, and cold regions, rare in America ; species 120. — Etym. sedco, 

 from the squatting habit of the species. 



Section 1. Tele'phium. Rootstock stout, perennial. Stems annual. 

 Leaves broad, flat or concave. 



1. S. Rhodi'ola, DC. ; leaves alternate sessile, flowers 4-merous 



dioecious. Rhodi'ola ro'sea, L. Rose-root. 



Moist alpine and subalpine rocks, from S. Wales and York to Shetland ; 

 ascends to near 4,000 ft. in the Highlands ; maritime rocks in Scotland ; 

 Ireland ; fl. May-Aug. — Rootstock 2-3 in., as thick as the thumb, branched, 

 woody, cylindric, scent of roses ; buds scaly. Stems 6-18 in., fleshy. Leaves 

 1-1^ in., glaucous, larger and more crowded upwards, obovate-oblong or 

 lanceolate, acute, toothed at the tip. Cymes compact, corymbose. Flowers 

 £ in. diam., yellow or purplish. Sepals narrow. Petals linear, smaller or 



