TERNSTRCEMIACE^. (tEA OR CAMKI.I.IA FAMILY.) 95 



flowers 2" broad; pods ovatv-conical, rather hiKjcr than the calyx. — Low 

 grounds, evervwliere. 



13. H. gymnanthum, Engclm. & Gray. Almost siiiiple, with strict 

 stem and branrhcs (1 -.3° high) ; leaves clasping, heart-shaped, acute or ()l)tusc ; 

 cyme naked, the floral leaves reduced to small awl-shapo(l bracts; in aspect 

 approaching the next. (H. mutilum, var. gymnanthum, C/rai/.) — Del. and 

 Penn. to Minn., ami southward. 



U. H. Canadense, L. Stem strict (6-ir/ high), witli the branches 

 erect ; leaves linear, 3-nerved at the base, obtuse ; cymes naked ; flowers deep 

 yellow, 2-3" broad when expanded; pods conical-oblonr/, usually much lonr/er 

 than the calyx. — Wet, sandy soil ; common. June - Oct. — Var. mXjus, Gray, 

 is a large form, 1-2° high, with lanceolate leaves \\' long, 3" wide, the upper 

 acute. L. Superior, Robhins ; S. New York and southward. — Var. minim i;m, 

 Choi.s., a simple few-flowered form, 1 -3' higli, with oblong obtuse leaves. 

 On wet rocks. Wise, and northward. 



» * Stems fastigiately branched; leaves linear or bract-like, ascendinrj or 



oppressed. 



15. H. Drumm6ndii, Torr. & Gray. Stem and the mostly alternate 

 bushy branches rigid, erect (10- 18' high) ; leaves linear-subulate, nearly erect, 

 l-nerved (3 - 9" long) ; flowers scattered along the upper part of tlie leafy 

 branches, short-pedicelled ; pods ovoid, not longer than the calyx. — W. 111., 

 Iowa, Kan., and southward, in dry soil. 



16. H. nudieaule, Walt. (Orange-grass. Pine-weed.) Stem and 

 bushy branches thread-like, wiry (4 -9' high); leaves minute awl-shaped scales, 

 oppressed ; flowers minute, mostly sessile and scattered along the erect branches ; 

 pods ovate-lanceolate, acute, much longer than the calyx. (H. Sarothra, Michx.) 

 — Sandy fields, N. Eng. to 111., Mo., and southward ; common. June - Oct. 



3. !E L O D E S, Adans. Marsh St. John's-wort. 



Sepals 5, equal, erect. Petals 5, equal-sided, oblong, naked, imbricated in 

 the bud. Stamens 9 (rarely more), united in 3 sets ; the sets separated by as 

 many large orange-colored glands- Pod 3-celled, oblong ; styles distinct. — 

 Perennial herbs, in marshes or shallow water, with small close clusters of 

 flesh-colored flowers in the axils of the leaves and at the summit of the stem. 

 (Name eXuSrjs, growing in ?Ha?-s^('.s, accidentally changed to Elodj^a by Jussieu, 

 wlio was followed by I'ursh, etc.) 



1. E. campanul^ta, Pursh. Leaves closely srssile or clasping by a broad 

 ba.^e, oblong or ovate, very obtuse; filaments united below the michlle. (IC. 

 \ irginica, Nutt.) — Common in .swamps; 1 -2° high. July, Aug. 



2. E. petiol^ta, Pursh. Taller, more branching; leaves tapering into 

 a short petiole, oblong : filaments united beyond the middle. — From Va. south 

 and westward. 



Order 19. TEKNSTKa^3IlACE.T]. (Tea or Camellia 

 Pa.mily.) 



Trees or shrubs, with alternate simple feather-veined leaves, and no .<?//;>- 

 ules, the regular Jlowers hypogynous and polyandrous, the sepals and petals 



