258 PBAGTICAL BOTANY. 



824. Flo-wei'S in racemes. Stamens 2 or 3. Style 3- 

 cleft; stigmas 3, simple. Calyx of the sterile flowers 3-, 

 that of the fertile 6- (5- to 8-) parted. Tragia. 



Flowers ia a terminal spike. Stamens 2. Stigmas 

 3, simple. • Calyx of the sterile flowers a 2-clef t, or crenulate 

 cup, that of the fertile ones 3-toothed. 



Stillingia sylvatica, L. 



835. Leaves alternate (at least most of them), exstipu- 

 late 826 



leaves opposite, somewhat 3-nerved, long-petioled- 

 stipulate ; stipules united. Flowers, the sterile of 3 (or 4) 

 sepals and as many stamens ; the fertile ones of 3 sepals, 1 

 pistil, and 3 rudimentary cucuUate stamens; both kinds 

 mixed in dense clusters. Filea pumila, Gray (833). 



836. Flowers 3-bracted. Sepals 3. Stamens 3 or 2. 



827 

 Flowers not 3-bracted ; the sterile with a 3- ^to 5-) 

 sepalled calyx and 3 (to 5) stamens ; the fertile consisting of 

 a 2-styled ovary between 2 leaf-like bracts. Leaves triangu- 

 lar-hastate, sinuate-toothed, or nearly entire (upper ones lance- 

 olate), sometimes meally ; most of them alternate. Fruit- 

 bracts deltoid. (666) Atriplex hastata, L. (836). 



837. Fruit (utricle) opening transversely. Stamens 3 

 or 2. Stems -whitish, mostly spreading next the ground. 

 Leaves spatulate-oblong, long-petioled, very obtuse, or retuse. 

 Flowers greenish, in close axillary clusters. 



(649) Amarautus albus, L. 



Fruit (utricle) indehiscent, or bursting irregularly. 



Stamens 3. Stems erect, ascending, or decumbent. Spikes 



or heads axillary and terminal. Leaves petioled, elliptic, or 



rhombic-lanceolate. (649) Euxolus. 



838. (815.) L Ovary 1-celled 829 



IL Ovary 3-celled. Styles 3, thick, subulate and 



recurved. Pod 3-horned. Calyx 4-parted. Stamens (of 

 the sterile flowers) 4, surrounding a rudimentary ovary. 

 Flowers, each 1- to 3-bracted, in a few, many-flowered spikes, 

 from near the base of the stem, the fertile below the sterile. 

 Leaves few, oval, crenate-toothed, long-petioled. 



Fachysandra procumbens, Mx. 



