10 HOUGH'S AMERICAN WOODS. 



/*. Panicled spikes and clothed with viscid gray hairs, 



2-3 lines in length. 153. R. OVATA. 



5 lines in length 179. R. INTEGRIFOLIA. 



tl*. Fleshy pericarp, 

 e. Ovoid and 



/. Clustered on axillary peduncles, 



g. On the growth of the season, 2 or 3 together, 2| in. long, blue, 

 h. Sessile upon the peduncle ; stone longitudinally striated. 



9. NYSSA MULTIFLORA. 

 7* 9 . Pedicellate, stone not striated; fruit subtended by 



Persistent calyx-tube and lobes, \ in. or less in length 



113. PERSEA PALUSTRIS. 

 Enlarged calyx-tube only, 1 in. or less in length. 



159. UMBELLULARIA CALIFORNICA. 



X. On growth of the previous season 111. FORESTIERA ACUMINATA. 

 Racemed, bluish and with short, fleshy, red pedicels. 



32. SASSAFRAS OFFICINALE. 

 6*. Ovoid-oblong, 1-1^ in. long; petioles 



Biglandular; pit compressed 81. PRUNUS NIQRA. 



Eglandular; pit more turgid 207. PRUNUS SUBCORDATA. 



e l . Oblong, tipped with the remnants of the style and about 1 in. in 



length. 

 Reddish and stone longitudinally striated with membranous edged 



ridges 110. NYSSA OGECHE. 



Dark blue, stone not membranous-ridged; flesh 



Thin and dryish 112. OSMANTHUS AMERICANUS. 



Thicker and Very oily 186. OLEA EUROPEA. 



Black and borne in abundance on paniculate spadices. 



200. WASHINGTONIA FILAMENTOSA. 

 e*. Subglobose and surface 

 /. Smooth 

 g, Purple or purplish black and 



h. Solitary, of sweet flavor 12. CELTIS OCCIDENTALIS. 



/t 5 . In racemes and of a vinous or astringent flavor ; racemes 

 4-6 in. long ; drupes numerous and in. thick. 



29. PRUNUS SEROTINA. 



1-3 in. long ; drupes few and larger 156. PRUNUS ILICIFOLIA. 



h*. In umbels, larger, of 



Acid- vinous flavor, ^ in. in diameter 82. PRUNUS CERASUS. 



Sweet-vinous flavor, f in. in diameter 56. PRUNUS AVIUM. 



gr 5 . Light-red, very spur, in umbels 55. PRUNUS PENNSYLVANIA. 



g 3 . Dark-red, very bitter, in corymbs 208. PRUNUS MOLLIS. 



g 4 . Whitish 



Not tipped with remnants of the style, rosy-cheeked 



178. SCHINUS MOLLE. 



Tipped with the stout styles 180. RHUS LAURINA. 



/ 2 . Papillose and with waxy exudation 164. MYRICA CALIFORNICA. 



c 8 . Drupe-like but containing more than one seed, and seeds 

 d . Inclosed in a bony 

 e. 2-3-celled stone, 

 f. Blue, subglobose, in flat-cymes with red stems. 



87. CORNUS ALTERNIFOLIA. 



/*. Bright-red, elongated, sessile, usually in a single head 



Only 3 or 4 developing 88. CORNUS FLORIDA. 



30 or 40 developing 185. CORNUS NUTTALLII. 



c*. 3-5-celled stone ; yellowish-white, in loose axillary panicles. 



105. MELIA AZEDARACH. 



<J 5 . Distinct, (not inclosed in a common stone) ; fruit 

 e. Crowned with persistent 

 /. Calyx-teeth, 



g. Purple-black, 5-seeded, in umbels 8. ARALIA SPINOSA. 



g 9 . Red or purplish, 



4-8-seeded, axillary 52. ILEX OPACA. 



2-seeded, in terminal panicles 181. HETEROMELES ARBUTIFOLIA. 



