34. CRASSITLACEiE. 141 



variable in size, shorter or longjr than the flowers. — Boggy 

 places in Devon and Cornwall. P. VII. E. 



Order XXXIV. CEASSULACE^. 



Sep. 3 — 30, more or less united at the base. Pet. the same 

 number, free or slightly connected, inserted at the base of the 

 calyx. Stam. inserted with the pet. and the same or twice 

 their number. Hypogynous scales 1 at the base of each carpel 

 or inconspicuous. Carpels the same number as and opposite to 

 the pet., free or slightly connected, 1-celled. Fr. of several fol- 

 licles opening on their face, with slightly albuminous seeds on 

 the inner suture. — Exstipulate. 



1. TtLijMA. Sep., pet., and stam. 3 — 4. Carp. 3 — i, con- 

 stricted in the middle and 2-seeded. Hypogynous scales 0. 



2. Sbdttm. Sep. and pet. 6, rarely 4 or 6. Stam. 10 or 12. 

 Hypogynous scales entire. Carp. 5 or 6 many-seeded. — 

 S. itkodiola has 4 sep., 4 pet., 8 stam., 4 carp., and is sub- 

 dioecious. 



[3. SEMPBUvrvxTM. /Sep. 6 — 10. Pet. the same. Stam. 

 twice as many as the pet. Hypogynous scales laciniate. 

 Carp, as many as the petals.] 



4. Cotyledon. Sep. 5. Pet. cohering into a tubular 5-cleft 

 corolla. Stam. 10, inserted on the corolla. Hypogynous 

 scales 5. Carp. 5. 



1. TiLL.aE;'A Linn. 



1. T. muscdsa (L.) ; st. branched and decumbent at the base, 

 fl. axillary sessile trifld.— -B. B. 116. R. I. t. 191.— Very mi- 

 nute, about 1 in. long, reddish. L. opposite, oblong, blunt, 

 concave above, connate. Sep. ovate or lanceolate, acute, bristle- 

 pointed. Pet. nearly subulate, white tipped with red. — On 

 barren sandy heaths in the South and East. A, VI. VII. E. 



2. Se'bum Linn. Stonecrop. 



* Rootstoch thick, many-headed. Leaves flat. Stems annual. 



f Flowers yellow, subdioecious, 4-parted. Khodioia Linn. 



1. 8. Rhodiola (DO.) ; root fleshy, 1. oblong smooth. — Mho- 

 diola rosea L. E. B. 508. — Fl. in a compact terminal cyme, 

 subdioecious. Stam. 8. L. acuminate, usually dentate in their 

 upper half. Rhizome large, having a remarkable smell. St. 

 6 8 in. high, simple. — Wet alpine rocks. P. VI. VII. Rose- 

 root. E. S. I, 



