34 
Sixteenth class. 
Cl. 16 . Monadelphia. 
1. Stas 5 .... 
— Stas more than 5 . 
2. Ls undiv., entire 
— Ls palmatilobed or pinnatilobed 
3. FIs yellow.Lysimachia. 469. 
— FIs never yellow ....... 1 
4. Cor. 5-partite, the throat closed by a corona. Ls always 
opp. ...... Vincetoxicum. 382. 
— Cor. with 5 pets, without a corona. Ls gen. altern. 
Linum. 113. 
5 (1). Perianth with 6 divisions. Stas 6 . Allium. 590. 
— Cor. reg., in Erodium the pets rather unequal . d 
— Cor. irreg. ........ 11 
6. Shrubs, with small ls, the seed with a tuft of hairs. 
Stas 10, the altern. ones shorter . . IVlyricaria. 195. 
— Herbs ......... 7 
7. Ls composed of 3 obcordate leaflets. Stas 10, the altern. 
ones shorter ...... Oxalis. 125. 
— Ls palmati-lobed or -partite. (FIs never yellow) . S 
8. Stas numerous. FIs with a calyx-like envelope (outer cal.). 
Malvacece . . . . . . . . 9 
— Stas 10. FIs with no outer calyx. Geraniacece . 10 
9. Outer cal. with 3 leaflets . . . Malva. 115. 
— Outer cal. 6—9-fid ..... Althaea. 116. 
10. Awns of the carps rolled up spirally. Inflorescence a 
many-fld umbel ..... Erodium. 123. 
— Awns of the carps rolled up in a circle (in the same 
plane). Inflorescence 2- (rarely l-)fld . Geranium. 122. 
11 (5). Seps 5, 2 of which are larger, petaloid (wings). Ls 
undiv., entire ...... Polygala. 88. 
— Cal. gamosep. with 5 teeth, 5-fid, or bilabiate. Part of 
the Papilionacece ....... 12 
12. Ls imparipinnate (the first sometimes almost simple) 
Anthyllis. 140. 
— Ls simple or ternate ...... 13 
13. Cal. 5-fid. Keel narrowed to a beak. Leaflets toothed 
Ononis. 139. 
& 
5 
3 
10 
— Cal. unilabiate or bi-labiate. Keel obtuse or only slightly 
pointed. Ls or leaflets entire. ^Fls yellow) . . 11 
14. Pod scarcely longer than the cal. Cal. div. to the base 
into 2 lips. Ulex. 135. 
— Pod exceeding the. calyx ..... 13 
15. Stig. capitate, terminal, at the top of the style, which 
is long, and rolled up in a circle . Sarothamnus. 136. 
— Stig. oblique at the top of the style . . . Id 
16. Ls simple ...... Genista. 137. 
— Ls ternate ...... Cytisus. 138. 
