iJ62 



LV. Ox^AGRACEiE. 



Epilobium. 



possess no remarkable properties. Many genera are ornamental, and one, the well known Fuchsia, is so 

 to a high ileeree. 



To this order is appended the suborder Haloragece, consisting of aquatic herbs of a low grade, the 

 flowers being imperfect or reduced to solitary parts or organs. 



FIG. 45.— 1. Flower of CEnothera fruticosa. 2. Plan of the flower. 3. 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. CircaBa Lutetiana. 8. The flower enlarged. 9. Plan of the flower. 10. Vertical 

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



Co7ispcctus of the Genera. 



!Pet. scarcely < Seeds comose. Epilobium. 1 



clawed ; I Seeds naked. (Enothera. 2 



i Claws unarmed. Gaura. 5 



Pet. clawed; I Claws with 2teeth. Clarkia. 3 



< Sta. 8; ^Beautiful ffreen-house shrubs. . . Fuchsia. 4 



^ Fls.perf. ( Stamens 4 ; styles united into 1. ... Ludioigia. 6 



rby 4s; J Flowers monoecious ; aquatic; leaves multifid. . . Myriophyllum. 9 



) by 3s; flowers apetalous ; aquatic ; leaves pectinate. . . . Proserpinaca. 8 



) by 2s; flowers complete and regular; leaves dentate. . . . Circaa. 1 



Partsoffl.arrang'd I by Is; flowers apetalous; aquatic; leaves verticillate. . . . Hippuris. 10 



Tribe 1. ONAGRE^. 



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



1. EPILOBIUM. 



Gr. cTTi, upon, \o0ov, apod, lov, a violet; i. e. a violet growing upon a pod. 



Calyx tube not prolonged beyond tbe 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. — "4- 



1. E. ANGUSTiFOLiuM. (E. spicatUHi. Lam.) Willoiu Herb. Rose-bay. 

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



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

 with 4 linear, revolute lobes. — In newlv 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 

 (5 — 6" long) pale glaucous-purple. Jl. Aug. 



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

 canescent. — Danville, Vt. Miss M. L. Toide I 



2. E, coLORATUM. Muhl. Colored Epilubum. 



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

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

 pd. srnall, 2-cleft at apex ; cal. campanulate ; sty. included ; stig. clavate ; ovules 

 in a single row. — Ditches and wet, .shady grounds, Briti.sh Am. to Ga. W. to 

 Oregon. Stem 1 — 3f high, becoming very much branched. Leaves 2 — 4Mong, 

 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. PALUSTRn. Marsh Epilobium. 



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



