258 DICOTYLEDONS. ONAGRARI^E. Epilobium. 

 2. MYRIOPHYLLUM. 



Monoecious. Cat. 4-leaved. Stam. 8. Stigmas 4, sessile. 

 Pericarp 4 -celled. 



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

 whorls, p. 272. Ditches. 



3. CALLITRICHE . 



Monoecious. Flowers naked. Stamen I. Styles 2. Pericarp 

 4-celled. 



1. C. aquatica. p. 259. Ditches. 



ORDER XLII. ONAGRARLE. Juss. 



Cal. superior, 2 4-cleft. Cor. of 2 4 petals. Stamens defi- 

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

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

 seeded. Seeds with or without albumen. Embryo straight. 



Herbs with alternate or opposite leaves. Alirb. 



1. CIRC^A. 



Cal. 2-leaved. Cor. of 2 petals. Stam. 2. Caps. 2-celled, 

 Cells with one seed. 



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

 denticulate, p. 4. Woods and coppices. 



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

 shining, p. 4. Woods and coppices. 



2. EPILOBIUM. 



Cal. 4 -partite, deciduous. Pet. 4. Stam. S. Caps, elongate, 

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

 comose. 



* Flowers irregular. Stam. bent down. 



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 hairy, stem very much branched hairy, root creep- 

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



3. E. parviflorum y leaves sessile lanceolate slightly toothed downy 



a 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 

 fleshy albumen like Hippuris and Myriopkyllum ; the mode of insertion of 

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



