LV. ONAGRACEJS. 



EPILOBIUM. 



i>osst ss no remarkable properties. Many genera are ornamental, and ene, the well known Fuchsia, is so 

 to a high degree. 



To this order is appended the suborder Ho,lorage<z, consisting of aquatic herbs of a low grade, the 

 flowers being imperfect or reduced to solitary parts or organs. 



PIG. 45. 1. Flower of CEnothera frutieosa. 2. Plan of the flowei. S. Section of the 4-celled capsule 

 of (E. biennis. 5. Hippuris vulgaris ; 6, its flower, with 1 stamen. 1 ovary, 1 style. 4. Vertical section 

 of its 1-seeded fruit. 7. Circaea Lflitetiana. 8. The flower enlarged. 9. Plan of the flower. 10. Vertical 

 section of the 2-celled and 2-seeded fruit. 



Conspectus of the Genera. 



(Pet. scarcely ( Seeds comose. Epilobium. 



clawed ; ? Seeds naked. CRnothera. 



\ Claws unarmed. Gaura. 

 Pet. clawed; (. Claws with 2teeth.C/arfcMf. 



$ Sta. 8; I Beautiful green-house shrubs. Fuchsia. 



( Fls.perf. \ Stamens 4 ; styles united into 1. . Ludioigia. 



("by 4s; ( Flowers monoecious ; aquatic ; leaves mtiltifid. Myriophyllum. 



} by 3s; flowers apetalous ; aquatic ; leaves pectinate. . Proserpinaca. 



j by 2s; flowers complete and regular; leaves dentate. . Circcea. 



Parts of fl. arrang'd L by is; flowers apetalous; aquatic; leaves verticillate. . Hippuris. 10 



TRIBE 1. OXAGREJS. 



Flowers perfect, the parts arranged in 4s (rarely 3s) ; pollen connected by threads. 

 1. EPILOBIUM. 



Gr. STTI, upon, XO/?OD, apod, tov, a violet; i. e. a violet growing upon apod. 



Calyx tube not prolonged beyond the ovary, limb deeply 4-cleft, 4- 

 parted and deciduous ; petals 4 ; stamens 8, anthers fixed near the 

 middle ; stigma often with 4 spreading lobes ; ovary and capsule 

 linear, 4-cornered, 4-celled, 4-valved ;. seeds 00, comose, with a tuft 

 of long hairs. r 4- 



1. E. ANGUSTIFOLIUM. (E. spicatum. Lam.} Willow Herb. Rose-bay. 

 St. simple, erect ; Ivs. scattered, lanceolate, subentire, with a marginal 



vein; roc. long, terminal, spicate; pet. unguiculate ; sta. and sty. declined ; stig. 

 with 4 linear, revolute lobes. In newly cleared lands, low waste grounds, 

 Penn. to Arctic Am. Stem 4 6f high, often branched above. Leaves sessile, 

 smooth, 2 5' long, { as wide, acuminate, with pellucid veins. Flowers nume- 

 rous and showy, all the parts colored, petals deep lilac-purple, ovary and sepals 

 (56" long) pale glaucous-purple. Jl. Aug. 



/?. canescens. Flowers of a pure white in all their parts ; ovaries silvery- 

 canescent. Danville, Vt. Mas M. L. Towle I 



2. E. COLORATUM. Muhl. Colored Epilobum. 



St. subterete, puberulent, erect, very branching ; Ivs. mostly opposite, lan- 

 ceolate, dent-serrulate, acute, subpetiolate, smooth, often with reddish veins ; 

 pet. small, 2-clefl at apex ; cal. campanulate ; sty. included ; stig. clavate ; ovules 

 in a single row. Ditches and wet, shady grounds, British Am. to Ga. W. to 

 Oregon. Stem 1 3f high, becoming very much branched. Leaves 2 4' long, 

 i as wide, with minute, white dots, upper ones alternate and sessile, lower on 

 short petioles. Flowers numerous, axillary. Pedicels 1 2" in length, ovaries 

 4 6", capsules 20", very slender. Petals rose-color, twice longer than the 

 sepals. Jl. Sept. Scarcely distinct from the next. 



3. E. PALUSTRE. Marsh Epilobium. 



St. terete, branching, somewhat hirsute ; Ivs. sessile, lanceolate, subden- 



