ELATINE^. (WATER-WOKT FAMILY.) 169 



Sepals 2-5, imbricated in the bud. Petals bypogyiious im- 

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

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

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

 with numerous, anatropous ovules, affixed to central angle. 

 Capsule, septicida], the placental column persistent, Seeds> 

 straight or curved, destitute of albumen. 



EL, A TINE, L. Water- Wort. 



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

 globular. Capsule membranous. Flowers solitary, bractless. Seeds 

 rough, latticed. 



• 



E. campylosperma, 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. HYPERICINEiE, DC. (St. John's-Wort Family). 



Herhs or shriihs, with opposite (rarely verticillate) 

 leaves^ lOithotU st'ipxdes^ dotted %vith pellucid glands and 

 hlack points, regnlar hypogynoxts fiowers, the petals iisiially 

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

 ed in 3-5 clusters^ the o'Dciryfree^ 1-celled with ?t-h parietal- 

 placent(B and as many styles^ or more or less completely 3-5- 

 celled hy the union of the p)lacent(J6 in the centre^ septicidal 

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

 versatile. Ovules numerous or lew, ascending or horizontal, 

 anatropous. Fruit capsular. Seeds without albumen, straight 

 or incurved. 



1. HYPERICUM. Petals naked at base, flypogj'nous glands 0. 



2, TRIADENIA. Petals appendaged at base. Hypogynous glands 3. 



1. HYPERICUM, L. St. Joh^'s-Wort. 



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

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

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



Stamens 5-adelphous. Petals deciduous, .02 long. Seeds winged. 



1 H. hircinum. 



* * Stamens 'Z-adelplious. Petals .01 or longer, persistent. Seeds cylindrical. 

 t Diclwtomous shrubs. Leaves leatliery, persistent, jointed at hase. 



2 H. cardiophyllum, 3 rupestre, 4 nanum. 



t t Shrubby herbs ; branches alter?iate or opp)Oiite. Leaver leathery, not 



jointed. 



25 



