PIUMKOSE FAMILY. 273 



LXVII. PRIMULACEJ], TRIMROSE FAMILY. 



Herbs with regular perfect flowers, the stamens, borne on 

 the coroHa and as many as its divisions and opposite them, 

 one style and stigma, and many or sometimes few ovules on a 

 free central placenta of the one-celled ovary, in fruit a pod. 



« Plant with hollow, inflated, leafy stems ; the leaves ivhorled or scattered, the lower 



ones pinnately parted ; parts of the ftoicer 5. 

 i. HOTTON'A. Calyx 5-parted. Corolla short salver-sliapeil, stamens included. Pod 

 opening uy ^ clefts down the side, inany-secdcMl. Flowers suuill, in whorls along the 

 upper part o- ihe stem and branches. 



* * Plant ivith leaves all from the root and simple ; the floirirs on a scape. 

 +- Fibrous-rooted or rhizonuitous. 



2. PRIMUL.\. Caly.x fj-toothed or 5-cleft, often angled. Corolla .salver-shaped or funnel- 



shaped, with !) si)reading lobes ; the stamens included in its tube. Pod opening by 

 valves or teeth at the top. Flowers in an umbel, which is sessile in one species, but 

 usually raised on a scape. 



3. DODECATHEON. Caly.\ 5-parted, retiexed. Corolla 5-parted; the divisions lanceo- 



late, strongly reflexed. Stamens conniving in a long slender cone, the linear anthers 

 very much longer than the short partly nioiiadelphous filaments. Pod splitting into 

 5 valves. Flowers in an umbel. 



4- ■(- Plant loith depressed or biscuit-shaped Jleshi/ corm. 



4. CYCLAMEN. Flower resembling that of Dodecatiiemi, but only one on a scape or 



stalk. Anthers sessile, pointed. 



» * * Plant with leafy stems, the leaves simple and chiefly entire. 

 -»- Leaves in one whorl at the summit of the slender stem; parts of the flr. wer T. 



5. TRIENTALIS. Calyx and corolla wheel-shaped, of mostly 7 divisions united only at 



base, those of the former linear-lanceolate, of the latter oblong, of both pointed. Fila- 

 ments united in a ring at base ; anthers oblong, curving when old. Flowers white. 

 -I- ■»- Leaves generally in pairs or lohorls along the stems ; parts of the flotuer mostly 5 

 ++ Floioers yellow {or in T with purple dots). 



6. STEIRONEMA. Calyx 5-parted. Staminodia 5, subulate, alternating with the lila- 



ments, which are distinct or nearly so on a ring at the base of the corolla. Capsule 

 10-20-seeded. Leaves opposite, but often seeming to be whorled, not dotted. 

 1. LYSIMACIHA. Caly.x 5-6-parted. Staminodia 0. Filaments uMutlly united at the 

 base. Capsule few-several-seeded. Leaves opposite or wlmrjeil lur even imper- 

 fectly alternate), dotted. 



+t ++ Corolla red, blue, or ivhite. 



8. ANAG.\LLIS. Corolla wheel-shaped, the 5 divisions broad. Filaments bearded. Pod 



(a pyxis) open by a transver.se division, the top fulling off as a lid, many-seeded, 

 -t- -1- ^- Leaves alternate alony the brinirhin;/ stems .■ base of calyx and ovary coherent. 



9. SAMOLUS. Calyx 5-cleft. Corolla bell-sliaped, .-.-.-left, with a Utile b„dy like a sterile 



filament in the clefts. Stamens incliidccl. I'ml nianxseediMl, siilitting into ."> valves. 

 Flowers small, white, in racemes. 



1. HOTTONIA, WATER VIOLET or FEATHER-FOIL. (Named 

 for rnif. Hot/on of Holland.) Flowers sumincr. 2/ 



H. infl^ta, Ell. A singular plant in pools and ditches, Mass., S. ; 

 smooth, with steins and bi-anches nuicli inflated except at the joints, bear- 

 ing finely cut pectinate leaves ; flowers vliite. 



ORAY's r. I-. .'i r.. ROT. — IS 



