386 L. CRASSULACEE (BRITTEN). 
Stamens isomerous with the petalg. Petals free or scarcely united 
at the base. 
Flowers 4-5-merous, small, mostly annual, herbs . . . - . 
Flowers 5-merous. Suffruticose fleshy perennials 
Stamens twice as many as the petals. 
Petals united nearly to the middle, or beyond. 
> Linnea, 
. CRASSULA. 
pe 
Calyx shortly 4-fid, large. . . . - . 8. BryopHYLLUM. 
Calyx 4-partite, rarely 4fid. . . . . . 4, KALANCHOE. 
Calyx 5-6-partite Fo ee oe . » 5. CoryLEpon. 
Petals free, or scarcely united at the base. 
Flowers 5-merous SG 6. SepuM. 
Flowers 6-merous . 7, SEMPERVIVUM. 
1. TILLAA, Linn.; Benth. et Hook. f. Gen. Pl. i. 657. 
Calyx-lobes 4-5. Petals 4—5, free or connate at the base. Stamens 
4-5, filaments filiform; anthers 2-celled. Scales 4-5, linear or 0. 
Ovary of 4-5 free carpels; narrowed into short subulate styles, with 
minute stigmas; ovules 1 or many in each carpel. Follicles 2- or many- 
seeded.—Aquatic or terrestrial ‘herbs, often very small, subsucculent, 
labrous. Leaves opposite, cylindrical subulate or flat, quite entire. 
lowers minute, axillary, solitary or cymose, white or red, often fas- 
ciculate. 
A genus of wide distribution, scarcely separable from Crassula, comprising about 
twenty species. 
Pentamerous, rarely tetramerous. 
Leaves narrow, sessile; petals connate at the base; carpels 
2-seeded ; scales small. 
Stems annual, herbaceous. 
Flowers sessile 1. T. pentandra. 
Pinwers Neulcolate ss oc a 2. T. pharnaceoides. 
Stem perennial, slightly ligneous at the base . . . . . 3. TZ. subulata. 
Leaves nearly as broad as long, petiolate ; petals free ; carpels 
many-seeded; scales0 . i gehen eee 4. T. alsinoides. 
Tetramerous. 
Pedicels longer than, or equalling, the leaves . 5. T. Vaillantii. 
Pedicels shorter than the leaves 6. T. aquatica. 
1. T. pentandra, Royle, Illust. Bot. Himal. 222 (name only). Stems 
decumbent, branched; internodes shorter than the leaves in wild 
specimens. Leaves subulate, acuminate, 2-3 lines long, connate at the 
base. Flowers axillary, solitary in the upper axils, 2-3 together in the 
lower, sometimes 4-merous. Calyx-segments lanceolate acuminate. 
Petals ovate acuminate, white, not exceeding the sepals. Scales cu- 
neate, truncate.—Crassula (Disporocarpa) Schimperi, C. A. Meyer. Ind. 
Sem. viii. 57; Walp. Rep. ii. 254. Disporocarpa pentandra, Asch. 
Schweinf. et Ascherson, Enum. 271. Combesia Schimperi, Schwf., Flora 
Ethiop. 80. 
Upper Guinea. Camaroons mountains, 8000.ft. (Nov.), Mann! 
Nile Land. Mountains of Abyssinia, Parkyns! Plowden! 
Lower Guinea. Benguela, Huilla, and Angola, Pungo Andongo, Dr. Welwitsch ! 
Specimens from the last-named locality have longer leaves than other Tropical 
African examples ; and corresponding variation is noticeable in Indian specimens. 
Also in the Himalayas and Nilgherries. 
