* _ a 
$02 ICOSANDRIA. MONOGYNIA. 
$31, PRUNUS. ZL. (Plum and Cherry.) 
ie Cali inferior, 5-cleft, deciduous. Petals 5. 
- Style terminal. Drupe even, nut with a some- 
what prominent suture, 
Trees with alternate stipuladl leaves, generally serrated 
on the margin and in some species glandular towards the 
base, in a few the leaves are sempervirent; flowers earlier 
than the leaves in the plums, later than the leaves in the 
aggregated, corymbose, or racemose. 
. , SreciEs. 1. P. virginiana. 2. serotina. 3. canadensis. 
| 4. coroliniana. (Evergreen Carolina Cherry-tree.) 5. sem- 
— perflarens. 6. borealis. 7. pensylvanica. 8.nigra. 9. hie- 4 
mais. YO. pygmea. V1. pubescens. 12. pumila. 3. depress 
aa. Pa. BP. Susquehanna? Willd. enum. 519. ,On the sum- 7” 
SoS ‘its of the highest hills in upper Louisiana to the Rocky 
Mo » Where it sometimes produces fruit at the 
height of 3 or4 inches from the ground; on the shores of 
Lake Huron the same species attains the height of 2 or 3 
» feet. 14. Chicasa. Im the United States, hitherto disco- 
_ vered only in the vicinity of ancient Indian stations; it ap- 
* pears to have been cultivated by the aborigines, but its 
original site is unknown. 15. maritima. ‘The fruit gather 
a. and scarcely eatable. 16. cerasifera. 17. spinosa, — 
The Stoe. These 2 last are unquestionably introduced 
_- - @Ad scarcely naturalized. 
Principally a North American genus; there are. at the 
- same time 7 species in Japan, 1 in China, 7_in Burope, 2 
in the West India islands, 1 indjgenous to the mountains 
_ of Crete and Lebanon, the poi s but ornamental Lau- 
- Tel from the Levant. P. C , the common cherry, 
and P. domestica, the plum, aRhough variously claimed in 
Europe, have been probably introduced from Persia or — 
the East. x 
$32. TIGAREA. fublet. 
- Calix inferior, 5-cleft. Petals 5. Capsule 
seeded, oblong, acuminate, pubescent, opening — 
- internally and longitudinally. 
A tropical genus as far as described by Aublet and al- — 
‘most exclusively American, comprehending shrubs which — 
are — to be sarmentose, having entire pean —_ : 
usually scabrous and stipulate, producing flowers in axtle 
lary ms rere a habit soit emia, from the plant described 
by Mr. Pursh, as to render the identity of extreme-— 
ly doubtful; in this plant, whieh to be alow, erect, 
“and much branched gemmiferous shrub, with small crowd- 
ed pubescent leaves, obtuse and trifid at the summit, the 
. Wi 
