ELATINE^. (WATEiJ-WORT FAMILY.) 169 



Sepals 2-5, iinbricated in the bud. Petals hypogyiious im- 

 bricated in the bud. Stamens hypogynous, free, as many or 

 twice as many as petals. Anthers 2-eelled. Ovary free, with 

 cells and styles as many as sepals ; stignias capitate ; cells 

 with numerous, anatropous ovnles, afhxed to central angle. 

 Capsule septicidal, the placental colunm persistent. Seeds 

 straight or curved, destitute of albumen. 



EL, A TIKE, L. Water- Wort. 



Flowers 4-merous. Sepals membranous, destitute of ribs. Ovary 

 globular. Capsule membranous. Flowers solitary, bractless. Seeds 

 rough, latticed. 



E. cainpylosperina, Senb. Curved-seeded Water-Wort © 

 .01 to .03. Leaves ovate-oblong, longer than petiole. Peduncles usu- 

 ally longer than leaf; stamens 8 ; seeds semicircular — Spring — 

 Marshy places ; Philistia, and southward. 



Order XX. HYPERlCIXEiE, DC. (St. John's-Wort Family). 



Herbs or sliruhs^ with opiyosite (rarely verticiUate) 

 leaves^ without stijndes^ dotted with pellucid glands and 

 hlach points, regidar hypogynous floioers^ the petals iisiially 

 oMiqiie^ iwhricated or twisted in the hud, the stamens collect- 

 ed in 3-5 clusters^ the ovary free, 1-ceUed with Z-5 parietal- 

 placentce and as many styles, or m.ore or less completely 3-5- 

 celledljy the union of the placentm in the centre, septicidal 

 — Calyx 5-parted, lobes imbricated in the bud. Anthers 

 versatile. Ovules numerous or few, ascending or horizontal, 

 anatropous. Fruit capsular. Seeds without albumen, straight 

 or incurved. 



1. HYPERICUM. Petals naked at base. Hypogynous glands 0. 



2, TRI ADENIA. Petals appendaged at base. Hypogynous glands 3. 



1. HYPERICUM, L. St. John's-Wort. 



Petals naked at- base. Stamens 3-5-adelphous at base, rarely nearly 

 l-adelphous. Hypogynous glands — Perennial herbs or shrubs, with 

 yellow flowers, and usually dotted, entire, opposite, extipulate leaves. 



Starnens 5-adelphoys. Petals deciduous, .03 long. Seeds toinged. 



1 H. hircinum. 



* * Stamens d-adelpJious. Petals. 01 or longer, persistent. Seeds cylindrical . 

 t Didhototnous shrubs. Leaves leathery, persistent, jointed at base. 



2 H. cardiophyllum, 3 rupestre, 4 nanum. 



+ t Shrubby herbs ; branches alternate or opposite. Leaver Uatkery, not 



jointed. 



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