8. V. cassinoìdes, L. (WITHE-ROD.) Shoots scurfy-punctate; leaves thickish and _opaque or dull_, ovate to oblong, mostly with obtuse acumination, _obscurely veiny_ (1--3´ long), _with margins irregularly crenulate-denticulate_ or sometimes entire; _peduncle shorter than the cyme_. (V. nudum, var. cassinoides, _Torr. & Gray_.)--Newf. to N. J. and Minn. Flowers earlier than the next. 9. V. nùdum, L. Obscurely scurfy-punctate; _leaves more veiny_, thickish, oval, oblong or lanceolate, entire or obsoletely denticulate, _lucid above_ (2--4´ long); _peduncle usually equalling the cyme_.--N. J. to Fla. [+][+] _Compound cymes sessile, 3--5-rayed; drupes oval, 5--7´´ long._ 10. V. Lentàgo, L. (SWEET VIBURNUM. SHEEP-BERRY.) _Leaves ovate, strongly pointed_, closely and very _sharply serrate_; petioles long and margined; cyme large; fruit oval, ½´ long or more, ripe in autumn, edible; tree 15--30° high.--Woods and banks of streams, from the Atlantic to Mo., Minn., and northward. Fl. in spring. 11. V. prunifòlium, L. (BLACK HAW.) _Leaves oval, obtuse_ or slightly pointed, _finely and sharply serrate_, smaller than in the preceding (1--2´ long); fruit similar or rather smaller.--Dry or moist ground, N. Y. to Mich., Kan., and southward. Flowering early.--A tall shrub or small tree. 12. V. obovàtum, Walt. Shrub 2--8° high; leaves obovate or spatulate, obtuse, entire or denticulate, thickish, small (1--1½´ long), shining; cymes small; fruit 5´´ long, black.--River-banks and swamps, Va. to Fla. May. 4. TRIÓSTEUM, L. FEVER-WORT. HORSE-GENTIAN. Calyx-lobes linear-lanceolate, leaf-like, persistent. Corolla tubular, gibbous at base, somewhat equally 5-lobed, scarcely longer than the calyx. Stamens 5. Ovary mostly 3-celled, in fruit forming a rather dry drupe, containing as many ribbed 1-seeded bony nutlets.--Coarse, hairy, perennial herbs, leafy to the top; the ample entire pointed leaves tapering to the base, but connate round the simple stem. Flowers sessile, solitary or clustered in the axils. (Name an abbreviation of _Triosteospermum_, alluding to the three bony nutlets.) 1. T. perfoliàtum, L. _Softly hairy_ (2--4° high); _leaves oval, abruptly narrowed below_, downy beneath; flowers brownish-purple, mostly clustered; fruit orange-color, ½´ long.--Rich woodlands, Canada and N. Eng. to Minn., Iowa, and Ala. June. Also called TINKER'S-WEED, WILD COFFEE, etc. 2. T. angustifòlium, L. Smaller, _bristly-hairy; leaves lanceolate, tapering to the base_; flowers greenish-cream-color, mostly single in the axils.--Shady grounds, Va. to Ill., Mo., and Ala. May. 5. LINNÆ̀A, Gronov. TWIN-FLOWER.