CLASSES, ORDERS, AND GENERA. 
XXXV 
Ord. IV. Dodecagynia. Styles variable, 4 — 12 or more. 
6. Sempervivdm. Cal. inferior, 12-cleft. Pet. 12, entire, regular. 
Caps. 12, distinct. — Stipules none. p. 155. 
7. Potentilla. Cal. inferior, 8 — 10-cleft, the segments alter- 
nately smaller. Pet. 4 — 5, entire or notched, regular, and the 
stamens inserted upon the calyx. Achenes 4 — 18, distinct.— 
Leaves with stipules adhering to the petiole, p. 129. 
8. Ranunculus. Cal. inferior, 5-cleft. Pet. 5, regular, and the 
stam. inserted on the receptacle. Achenes many, distinct, 
p. 7. 
9. Stratiotes. Perianth superior, 6-parted ; 3 outer segments 
herbaceous, 3 inner petaloid. Germ. 6-celled. p. 425. 
Class XII. ICOSANDRIA. 20 or more stamens placed on the 
calyx. 
1. ROSACEAS. Flowers regular. Cal. 4 — 5- or 8 — 10-cleft. — 
Leaves with stipules, p. 117. 
2. Stratiotes. Perianth 6-parted, regular ; 3 outer segments 
herbaceous, 3 inner petaloid. Germen inferior, 6-celled. — 
Floating plants, p. 425. 
Class XIII. POLYANDRIA. Many stamens inserted upon the 
receptacle ( free from the calyx and petals). 
Ord. I. Monogynia. 1 style. 
* Flowers irregular. 
1. Delphinium. Cal. coloured, upper leaflet produced at the base 
into a spur. Pet. 4 ; 2 upper ones with appendages included 
within the spur. p. 13. 
** Flowers regular. Petals 4. 
2. PAP AVER ACE AS. Cal. of 2 caducous leaves. Fruit a cap- 
sule or pod. p. 16. 
3. AcTiEA. Cal. of 4 caducous leaves. Berry 1-celled. p. 1 3. 
*** Flowers regular. Petals 5. 
4. Helianthemum. Cal. of 3 equal leaves, or 5 of which 2 are 
exterior and smaller ; larger ones twisted in bud. p. 45. 
5. Tilia. Cal. 5- partite ; its leaves similar, valvate in bud. p. 78. 
**** Flowers regular. Petals numerous. 
6. NYMPIIA2ACEA2. p. 15. 
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