258 DICOTYLEDONS. ONAGRARI.«. hpilohimn. 



2. MYRIOPHYLLUM. 



Monceciotis . Cal. 4-leaved. Stam. 8. Stigmas 4, sessile. 

 Pericarp 4 -celled. 



1. M. spicatiim, sterile flowers in interrupted leafless spiked 

 whorls, p. 272. — Ditches. 



3. CALLITRICHE «. 



Moncecions. F/o«'#r5 naked. Stamen \. Styles 2, Pericarp 



4-cclled. 

 1. C. aquatica. p. 259. — Ditches. 



Order XLII. ONAGRARI^. Juss. 



Cc/. superior, 2 — 4-cleft. Cor. of 2 — 4 petals. S/awe^z^ defi- 

 nite; when equal in number to the petals alternate with them. 

 Style \. Stigma 2 — 4-cleft. Capsule 2 — 4-celled, 1 — many- 

 seeded. Seeds with or without albumen. Embryo straight. 



Herbs with alternate or opposite leaves. Mirb, 



1. CIRC^EA. 

 Cal. 2-leaved. Cor. of 2 petals. Slam. 2. Caps. 2-celled. 

 Cells with one seed. 



1. C. Lutetiaiia, stem erect pubescent, leaves ovato-cordate 

 denticulate, p. 4. — fVbods and coppices. 



2. C. alpina^ stem ascending glabrous, leaves cordate toothed 

 shining, p. 4. — Woods and coppices. 



2. EPILOBIUM. 



C(d. 4-partite, deciduous. Pet. 4. Stam. 8. Caps, elongate, 

 obtusely 4-sided, 4 -celled, 4-valved, many-seeded. Seeds 

 comose. 



* Flowers irregular. Stam. bent doivn. 



1. E. angustifolium, leaves scattered linear lanceolate veined 

 glabrous, flowers irregular subspicate, stam. declined, p. 116. 

 — Rocks. 



** Flowers regular. Stam. erect. Petals doubly notched. 



2. E. hirsutum, leaves semiamplexicaul ovato-lanceolate den- 

 tato-serrate hairv, stem very much branched hairy, root creep- 

 ing, stigma 4-creft. p. 117. — Ditches, rivers., and lakes. 



3. E. parvijlorum, leaves sessile lanceolate slightly toothed downy 



^ Mr. Brown has long ago suggested the propriety of referring this genus 

 toHALORAGE/E, notwithstanding the differences of its structure. The ovula 

 are peltate, not pendulous; but the radicle is superior, and in the axis of a 

 iJeshy albumen like H'lppuris and Myriopliyllum; the mode of insertion of 

 ovula is not in thix instance, therefore, of its usual importance. 



