HYP 171 



17_2. GNAPHALIUM. (A Greek name.) 



Margarita' ceum, (large flower, life-everlasting. O. y. & w. Ju. 7J.) leaves 

 linear-lanceolate, gradually narrowing, acute ; stem branching above j 

 corymb fastigiate ; flowers pedicelled. Flowers with white pearly 

 rays and yellow disks. 1 2. f. 



131. HEDEOMA. 



Pulegio'ides, (pennyroyal. O. b. J. ) pubescent; leaves oblong, ser- 

 rate; peduncles axillary, whorled. G 8. i. 



173. HELIANTHUS. (From Elios, the sun, and anthos, flower.) 



Exotic. 



An"nuus, (common sunflower, y. & w. Ju. Tj.) leaves all cordate, 3- 

 nerved; peduncles thickening upwards; flowers nodding. 6 10. f. 



1213. HEPATICA. (From Hepar, the liver.) 



Acutil"oba, (heart-liverleaf. O. w. & b. Ap. Ij.) leaves cordate, 3 to 5- 

 lobed ; lobes entire, acute ; leaves of the calyx acute. Grows in 

 woods, preferring the north side of hills and mountains. 5. i. 



America'na, (kidney-liverleaf. O. w. & b. Ap. 1J.) leaves heart-reni- 

 form, 3-lobed ; lobes entire, round-obtuse ; leaves of the calyx ob- 

 tuse. Grows chiefly in the woods, preferring the south side of hills 

 and mountains. This is sometimes called the triloba. 5. i. 



1 1. HIPPURIS. (From ippos, ahorse, and aura, tail.) 



Vulga'ris, (mare's-tail. y-g, M. 9J.) leaves lin^a c, and lance linear, ver- 

 ticillate. 



41. HOUSTONIA. (From Houston, a botanist.) 



Ceru'laa, (innocence, forget-me-not. O. b. & w. M. 7J.) stem erect, se- 

 taceous, dichotomous ; radical leaves spatulate ; cauline ones oblan- 

 ceolate, opposite ; peduncles 1-flowered, elongated. 4 6. i. Verv 

 common in New England. 



205. HUMULUS. 



Lu'pulus, (hop. O. g-y. Au. '2J.) stem twining with the sun ; leaves 

 lobed. 



102. HYDRANGEA. (From Hudor, water, and angeion, a vessel.) 



Vulga'ris, (hydrangea. E. w. Au. T^ leaves oblong-ovate, obtuse at the 

 base, acuminate, glabrous beneath; cymes naked. 5. f. 



12-5. HYPERICUM. 



Pcrfora'tum, (O. y. J. 7J.) erect, branching ; stem 2-edged ; leaves ob- 

 long, obtuse, transparently punctate; panicle terminal-brachiate, 

 leafy ; petals twice as long a^ .he acute, lanceolate calyx. This is 

 the common St. John's wort, so troublesome to farmers. 1 3. f. 



