CLASSIFICATION 



4-5, hypogynous, free, or united at the very base, imbricate, entire, 

 often fleeting. Stamens inserted with the petals, varying in numbers. 

 Carpels 3 or more ; stigmas several, much divided. 

 Genera described. — Lewisia, Claytonia. 



Nat. Ord. MALVACE^. Characters. — Leaves alternate, usually 

 more or less palmately lobed or divided. Flowers regular, herma- 

 phrodite. Sepals usually 5, more or less united at base. Petals 5, 

 hypogynous, twisted in bud, free. Stamens numerous, usually with 

 filaments more or less united, hypogynous. 



Genus described. — Callirhok. 



Nat. Ord. STERCULIACE^. Characters. — Leaves usually 

 alternate, often lobed. Flowers regular, 1- or 2-sexed. Calyx 

 gamosepalous, 5-lobed. Petals 5. Stamens with filaments often 

 united at the base into a cylindrical or urn-shaped tube. 



Genus dcsci^ibed. — Hekmannia. 



Series 2. DlsciFLORE^. — Flowers regular, with parts, usually 

 in 5's. Calyx usually free from the ovary. Stamens inserted below 

 or above or around a disc. Ovary usually superior. Carpels usually 

 united (si/ncarpous). 



Nat. Ord. GERANIACE^. Characters. — Leaves opposite or 

 alternate, often 2-stipuled, toothed, lobed, dissected, very rarely 

 entire. Peduncles often axillary, 1-fiowered or with many- 

 flowered umbels, rarely cymose or racemose. Flowers hermaphrodite, 

 regular or irregular. Sepals 5, rarely fewer, free or sometimes 

 united to the middle, imbricate, rarely valvate, the upper one spurred 

 in some genera ; persistent or rarely deciduous. Petals 5, or fewer 

 by abortion, or absent ; hypogynous or somewhat perigynous, vari- 

 ously imbricated, rarely twisted. Torus with 5 glands alternate 

 with the petals, or glandless. Stamens usually 10, rarely more 

 or less. Fruit either a 3-5-lobed capsule, or separating into cocci, 

 rarely a berry. 



Genera described. — Tiior^EOLUM, OxALis, Geranium. 



Nat. Ord. AMPELIDE^. Characters. — Climbing plants with 

 alternate, stalked, digitately-lobed leaves. Flowers regular, small, 

 in cymes or panicles, usually opposite the leaves. Calyx 4:-5-lobed 

 or toothed. Petals 4-5, free or united. Stamens 4-5, opposite 

 the petals. Fruit a berry. 



Genera described. — Ampelopsis, Cissus. 



49 D 



