CBASSULACEjE. 321 



more frequently thick fleshy herbs, acaulescent and giving off axillary 

 leafy offsets, or more rarely caulescent leafy ; leaves alternate thick, 

 often imbricate, sometimes revolute ; floral cymes regular or irregular 

 unilateral, sometimes spiciform, often dense {Central and South 

 Europe, West and Central Mountainous Asia, West-Insular and East 

 Africa). See p. 307. 



4. Cotyledon L. — Flowers 5-merous ; sepals equal to tube of 

 corolla {Echeveria) or shorter. Petals connate; tube large, urceolate 

 or cylindrical, sometimes much elongated {Pisforinia) ; lobes of limb 

 small, imbricate or more frequently twisted, finally spreading. 

 Stamens 10 (or very rarely 5), inserted in tube or throat of corolla ; 

 exserted or included. Carpels 5, oppositipetalous (nearly of Sedum), 

 each with an external scale at base, oo-ovulate. Follicles 5, oo- 

 seeded. — Undershrubs or herbs, sometimes scapigerous, varying much 

 in habit ; leaves alternate or opposite, sometimes rosulate, usually 

 very thick and fleshy, sometimes peltate ; flowers racemose, spicate 

 {Umbilicus), or more frequently cymose; cymes sometimes uniparous, 

 1-bracteate {Africa, West and Central Temperate Asia, Mexico, South 

 and West Europe). See p. 300. 



5. Kalanchoe Adans. — Flowers nearly of Cotyledon, 5-merous; 

 corolla hypocrateriform, persistent; tube urceolate; limb spreading. 

 Stamens 8, all fertile, or 4 oppositipetalous antherless, minute or ; 

 anthers included. Carpels 4, scales, membranous follicles, and seeds, 

 all of Cotyledon. — Undershrubs or herbs, usually erect, robust ; leaves 

 opposite, sessile or petiolate, entire, crenate or pinnatifid, fleshy ; 

 cymes (usually 2-chotomous) branching many-flowered {Tropical 

 Africa, Tropical and Eastern Asia, Brazil). See p. 310. 



6. Bryophyilum Salisb. — Flowers 4-merous (nearly of Cotyledon 

 or Kalanchoe) ; calyx large inflated sacciform, terete or 4-zonal, 

 shortly 4-fid or 4-dentate, valvate. Corolla urceolate or subcamp- 

 anulate ; limb 4-fid, twisted, finally spreading exserted. Stamens 8 

 inserted in sets on tube of corolla. Scales 4, carpels, and ( co -seeded) 

 follicles, all of Cotyledon or Kalanchoe. — Thick fleshy herbs, frutescent 

 at base ; leaves opposite petiolate, simple or imparipinnate, crenate, 

 sometimes gemmiparous ; cymes (usually 2-chotomous) much branch - 



VOL. III. Y 



