24 
Eleventh, twelfth class. 
Cl. li. Dodecandria. 
Sempervivum. 207. 
2 
a 
6 
1. Styles 6—20. Ls thick, fleshy 
— Styles 1—5 ...... 
2. Floral envelope composed of cal. and cor. 
— Floral envelope simple or 0 . 
3. Pets multifid. Fr. open at the top . Reseda. 85. 
— Pets undiv. Fr. not open ..... 4 
4. Ls impari- and interruptedly-pinnatisect. FIs yellow, in 
long spiciform racemes .... Agrimonia. 173. 
— Ls undiv., entire ...... o 
5. Cal. 12-tootlied. Pets red . . . Lythrium. 193. 
— Cal. 2-partite. Pets yellow . . . Portulaca. 198. 
6 (2). Ovary 6-celled. Ls reniform . . Asarum. 500. 
— Ovary 3-celled. Ls not reniform . . Euphorbia. 503. 
1 . 
2 . 
3. 
4. 
5. 
6 . 
7. 
8 . 
9. 
10 . 
11 . 
Cl. 12. Icosandria. 
Styles 1—5 ........ 2 
Styles numerous (more than 5) 16 
Floral envelope simple, a 4-fid cal. FIs in terminal 
heads. Ls pinnate .... Sanguisorba. 176. 
FI. envelope composed of cal. and cor. . . 3 
Pets numerous, yellow .... Opuntia. 208. 
Pets 4—6, never yellow ..... 4 
Cal. sup. (Lig. pis) ...... o 
Cal. inf. . . . . . . . . . 14 
Style 1. Cor. scarlet. Fr. a many-celled, fleshy berry 
with a coriaceous envelope . . . Punica. 183. 
Styles 2—5,. sometimes united at the base, rarely 1 
(comp. Mespylus monogyna) ..... 6* 
Ls opp. Pets 4. Capsule . . Philadelphus. 196. 
Ls altern. Pets 5. Fr. a fleshy pseudocarp, formed by 
the development of the cal.-tube and crowned by the 
persist, cal.-limb. Pomacece ..... 7 
Cal. with 5 short teeth. Ls entire. Fr. the size of a pea 
Cotoneaster. 178. 
Cal. 5-fid or 5-partite .... 
Ls pinnate ...... 
Ls undiv. or more or less incised 
FIs solitary ...... 
FIs in racemes or corymbs 
Divisions of the cal. toothed. Quince 
Divisions of the cal. entire. Medlar 
Pets long, narrow, lanceolate-cuneiform 
Pets broad, oval or rounded, or oblong-lanceolate and 
then rose-coloured ...... 12 
S 
Sorbus. 181. 
O 
10 
. . 11 
Cydonia. 179. 
Mespilus. 177. 
Aronia. 182. 
