442 CXXII. EUPHOKIJIACE/K (BROWN). 



alone or half .tarrOHudinp one ovarii {female Jloicer) which is not enclosed in 

 separate involucre. Ovarij 2-3-celle(l^ with 1 pendulous ovule in each cell. 



*Ovary ov female flower, when i)resent, enclosed iutlie same 

 involucre as the stamens; involucre shortly tubular, 

 cnp-like or 4-angle{i, sometimes oi)en to half-way down 

 on one side, never open to the very base nor composed 

 of entirely free se<^mcnts. 

 flnvolucre a cup or short tube cut iutou fring'eof tiliform 

 segments at the top, with an erect oblong entire lobe 

 outside and behind, glandular at its apex and over- 

 topping the fringe 1. STEXADKNirif. 



tt Involucre a cup (not 4-angled), with an entire rim-like 

 gland or 2-8 green or coloured glands at its margin, 

 surrounding an inner circle of 4-8 (usually 5) thin 

 and usually fringed or toothed lobes, often with a 

 pair of scale-like or conspicuous green or coloured 

 bracts at its base or enclosed in an entire or 2-lobed 

 obliiiuel'y cup-like bract. 

 Involucre with one continuous rim-like entire or rarely 

 4-crenatc erect or si)reading gland entirely 

 surrounding it, or oi)en on one side, occasionally 

 with 1-5 cut-like notches separating the gland 

 into contiguous and usu.dly unequal segments, 

 but scarcely forming distinct glands. (8ee also 

 4, l^uphorhia.) 

 Perennials with thick eylindrie tlesliy stems or with 

 anuvial unbranehed stems from a tuberous root- 

 stock. Bracts free or combined into an oblitpie 

 entire or 2-l()bed cuj) longer tl)an and partly 

 concealing the involucie, which is open on one 



side 2. MnxADENiiM. 



Branching shrubs or small trees; bracts free, 

 scarcely or not exceeding the rim of the in- 

 volucre, which is usually entire, but sometimes 



has 1-5 cut-like notches 3. SYXADF.NirM. 



Involucre with 2--S distinct glands, contiguous or 

 ecpially spaeetl, entire and with or without petal- 

 like appendages or 2-horned or divided into 3-15 

 entire or forked processes. (In a few succulent 

 species of Euphorbia the glands are united into a 

 continuous rim and then are technically not dis- 

 tinguishable from Synadenium, and a few species 

 of the latter genus have the gliind divided by 

 cut-like notches and are then technically scarcely 

 distinct from Euphorbia.) 

 Fruit separating into 3 lobes or cells, which open 

 down the inner face to liberate the seed, not 

 tlesliy or but slightly so in a few succulent 

 species ....*•.. 

 Fruit indehisceut, thickly fleshy, containing one 



hard 3-celled "stone" o- KL.T^orHORBTA. 



ttflnvolucre 4-angled, divided into 4 compartments by 4 

 large partition-like glands, without a gland or glands 

 (Ml or outside its margin 6. Dichostemma. 



4. ErPHORBTA. 



' 



