14. Hypericum Drummondii (Grev. & Hook.) T. & G. Nits-and-lice. 



Plant annual, to 8 dm. high, the stem and the alternate bushy branches rigidly 

 erect, mostly densely punctate throughout; leaves numerous, linear to linear- 

 subulate, ascending to nearly erect, not appressed, 1 -nerved, 6-20 mm. long; flowers 

 short-pedicelled, mostly solitary in the axils along the upper part of the leafy 

 branches; sepals narrowly lanceolate, acute, 3-5 mm. long; petals orange-yellow, 

 withering before noon; stamens 10 to 20; capsules ovoid, 4-5 mm. long, reddish- 

 brown, barely as long as or but slightly exceeding the sepals; seeds oval, dark- 

 brown, strongly ribbed and rugose, about 1 mm. long. Sarothra Drummondii Grev. 



6 Hook. 



In dry sandy or gravelly soils in fallow fields, about lakes and marshes, in open 

 scrub oak and cedar-oak flatwoods in Okla. {fide Waterfall) and cen. and e. Tex., 

 July-Sept.; from Fla. to Tex., n. to Md., W.Va., O., Ind., s. 111., la. and s.e. Kan. 



15. Hypericum virginicum L. Marsh St. John's-wort. Fig. 529. 



Plants stoloniferous, the stem simple or bushy-branched (especially above), to 



7 dm. high; leaves sessile and cordate or clasping at base, oblong-elliptic to ovate- 

 oblong, rounded at the retuse to apiculate apex, the principal leaves to 7 cm. long 

 and 3 cm. wide, dark-punctate beneath, dotted with translucent glands, often 

 purplish; flowers in small clusters in the upper axils and terminal; sepals linear- 

 elliptic to lanceolate, obtuse to acute, 4-7 mm. long; petals flesh-color or mauve, 

 7-10 mm. long; filaments free except near the base, the 3 fascicles alternating with 

 3 large orange-colored glands; capsule ellipsoid, tapering to the apex, about 1 cm. 

 long, the mature styles 2-3 mm. long; seeds tan-color, oblong, pitted, about 1 mm. 

 long. Triadenum virginicum (L.) Raf. 



In or on the edge of water along streams, in bogs and swamps, and about lakes 

 and ponds in e. Tex., Aug.-Oct.; from Fla. to Tex., n. to N.S., s. N.E., N.Y., O., 

 Ind. and 111. 



16. Hypericum Walteri Gmel. Figs. 530 and 531. 



Similar in habit to H. virginicum but usually larger and more branched; leaves 

 oblong to oblong-oblanceolate, obtuse to rounded at the apex, tapering into the 

 slender petiole, to 15 cm. long and 35 mm. wide, yellowish-green above, pale- 

 glaucous and translucent-dotted beneath, often reddish-tinged; flowers in small 

 axillary and terminal clusters; sepals linear-elliptic, obtuse, 3-4 mm. long; petals 

 reddish, 5-7 mm. long; filaments united to about or above the middle; capsules 

 ellipsoid-cylindric, rounded to tapered at apex, 7-11 mm. long, the styles about 

 1 mm. long; seeds oblong, dark-brown at maturity, about 0.75 mm. long. H. petio- 

 latum Walt., H. tubulosum Walt. var. Walteri (Gmel.) Lott, Triadenum petiolatum 

 (Walt.) Britt., T. Walteri (Gmel.) Gl. 



In or on the edge of water along streams, in bogs and swamps, and about ponds 

 and lakes, sometimes on cypress knees and trunks, logs and occasionally on moist 

 sandy wooded slopes, in e. Okla. (fide Waterfall) and e. Tex., Aug.-Oct.; from 

 Fla. to Tex., n. to Md., W.Va., s. Ind. and s.e. Mo. 



17. Hypericum tubulosum Walt. 



Erect rhizomatous plant with stem simple or branched above, 3-8 dm. tall, 

 glabrous throughout; leaves sessile, ample, lacking translucent glands or super- 

 ficial dots on lower surface, oblong to elliptic-oblong or elliptic-oblanceolate, 5-15 

 cm. long, 2-5 cm. wide, scarcely tapered to a broadly rounded to truncate or 

 somewhat cordate base, obtuse to broadly rounded at apex; cymes axillary, few- 

 flowered, on peduncles to 3 cm. long; sepals oblong-lanceolate, acute, 4-6 mm. 

 long; petals pink, 5-8 mm. long; fruit 9-1 1 mm. long; styles 3, about 1 mm. long. 

 Triadenum tubulosum (Walt.) Gl. 



1140 



