62 ST. JOHN'S-WORT FAMILY. 



M. -M- Shrubby, evergreen or nearly so, only Southern. 



H. fasciculatum, FASCICLED S. Leaves narrow-linear and small, and 

 with shorter ones clustered in the axils ; pod narrow. Wet pine barrens. 



H. myrtiiblium, MYRTLE-LEAVED S. Leaves heart-shaped and partly 

 clasping, thick, glaucous ; pod conical. Wet pine barrens. 



H. aureum, GOLDEN S. Leaves oblong with a narrow base, glaucous 

 beneath; thick; flowers mostly single, very large (2' broad), orange-yellow; 

 pod ovate. River-banks towards the mountains. 



H. nudiflbrum, NAKED-CLUSTERED S. Shrubby and evergreen S., less 

 so in Virginia, &c., has 4-angled branches, oblong pale leaves, and a peduncled 

 naked cyme of rather small flowers ; pods conical. 



-n- -n- Herltaceous, simple-stemmed, Northern $ Western. 



H. sphserocarpon, SPHERICAL-FRUITED S. About 2 high ; leaves 

 diverging, oblong-linear (2' long), obtuse ; flowers numerous, small, in a naked 

 flat cyme ; sepals ovate ; pod globular, 1 -celled. Rocky banks, W. 



H. adpressum, UPRIGHT-LEAVED S. A foot high ; leaves ascending, 

 lanceolate, often acute ; flowers few and rather small ; sepals narrow ; pod 

 oblong, partly 3-celled. Low grounds, Pennsylvania to Rhode Island. 



H. ellipticum, ELLIPTICAL-LEAVED S. Barely 1 high ; leaves spread- 

 ing, oblong, thin ; flowers rather few in a nearly naked cyme, pale ; the pod 

 purple, oblong-oval, obtuse, 1 -celled. Wet soil, N. 



- - -i- Styles 3 wholly separate (see Lessons, fig. 255) : herbs. 

 M- Ovary and pod 3-cel/ed : petals black-dotted : stij'es mostly diverging, 



H. perforatum, COMMON S. The only one not indigenous, nat. from 

 Eu., a troublesome weed in fields, &e. ; spreads by runners from the base ; 

 upright stems branching ; leaves oblong or linear-oblong, with pellucid dots ; 

 flowers rather largo in open leafy cymes ; the deep yellow petals twice the length 

 of the lanceolate acute sepals. The juice is very acrid. 



H. corymbbsum, COKY.MISKD S. Common N. in moist ground; stem 

 2 high, sparingly branched ; leaves oblong, slightly clasping, having black as 

 well as pellucid dots ; flowers rather small, crowded ; petals light yellow and 

 black-lined as well as dotted ; sepals oblong ; styles not longer than the pod. 



H. maculatum, SPOTTED S. Common's, has somewhat heart-shaped 

 or more clasping leaves, lanceolate sepals, and very long and slender styles : 

 otherwise like the last. 



- ** Ovary 1 -celled : stem strict : leaves ascending, acute, closely sessile, short. 



H. angulbsum, ANGLED S. Wet pine-barrens from New Jersey S. 

 Stem sharply 4-angled (l-2 high), smooth; leaves ovate or lance-oblong; 

 flowers scattered along the ascending branches of the cyme, small, copper- 

 yellow ; styles slender. 



H. pilbsum, HAIRY S. Wet pine-barrens S. Stem terete, and with the 

 lance-ovate leaves roughish-downy ; styles short. 



* * Annual, low and slender, small-flowered herbs: stamens 5-12 : ovary and 

 brown-purple pod strictly 1 -celled : styles 3, separate: sepals narrow, erect: 

 petals narrow. 



-- Leaves conspicuous and spreading: jloicers in cymes. 



H. mutilum, SMALL S. Slender, much branched and leafy up to the 

 flowers ; leaves partly clasping, thin, 5-nerved, ovate or oblong ; petals pale 

 yellow. Everywhere in low grounds. 



H. Canadense, CANADIAN S. Stem and branches strictly erect ; leaves 

 linear or lanceolate, 3-nervcd at the base ; petals copper-yellow. Wet sandy soil. 



*- *- Leaves erect, aid-shaped or scale-like and minute : flowers very small and 

 scattered along the numerous bushy and wiry slender branches. 



H. Drumm6ndii, DRUMMOND'S S. In dry barrens, W. Illinois and S., 

 with linear-awl-shaped leaves, short-pedicellcd flowers, and pods not longer than 

 the calyx. 



H. Sarbthra, ORANGE-GRASS or PINE-WEED. Common in dry sterile 

 noil, with minute awl-shaped appressed scales for leaves, flowers sessile on the 

 wiry branches, and slender pods much exceeding the calyx. 



4j. S , 



