ROSACEA. SILVA OF NORTH AMERICA. 113 
CRATAIGUS FLAVA. 
Summer Haw. Yellow Haw. 
LEAVES rhombic-obovate. 
Crateegus flava, Aiton, Hort. Kew. ii. 169.— Willdenow, Cratzegus Caroliniana, Persoon, Syn. ii. 36. — Elliott, Sk. 
Spee. ii. pt. ii. 1002. — Persoon, Syn. ii. 87. — Pursh, FV. i. 554, 
Am. Sept. i. 338. — Nuttall, Gen. i. 8305. — De Candolle, Mespilus flava, Willdenow, Enum. 523. — Poiret, Lam. 
Prodr. ii. 628.— Watson, Dendr. Brit. i. 59, t. 59.— Dict. Suppl. iv. 70. — Spach, Hist. Vég. ii. 59, t. 10, #. H. 
Don, Gen. Syst. ii. 600. — Bot. Reg. t. 1939.— Torrey & Cratzegus turbinata, Pursh, FU. Am. Sept. ii. Suppl. 735. — 
Gray, Fl. N. Am. i. 468.— Dietrich, Syn. iii. 160. — Poiret, Lam. Dict. Suppl. v. 548. — Elliott, Sk. i. 549. — 
Chapman, #7. 128. — Curtis, Rep. Geolog. Surv. N. Car. De Candolle, Prodr. ii. 627. — Don, Gen. Syst. ii. 599. 
1860, iii. 83. — Regel, Act. Hort. Petrop. i. 123.—Ka- Mespilus turbinata, Sprengel, Syst. ii. 506. —Spach, Hist. 
leniezenko, Bull. Mosc. xlviii. pt. ii. 27. — Sargent, For- Vég. ii. 66. 
est Trees N. Am. 10th Census U. S. ix. 82.— Watson & Crateegus lobata, De Candolle, Prodr. ii. 628. — Don, Gen. 
Coulter, Gray’s Man. ed. 6, 166. Syst. ii. 599. — Loudon, Ard. Brit. ii. 824, £. 554, 586. 
Crateegus glandulosa, Aiton, Hort. Kew. ii. 168 (not Crategus flava, var. lobata, Lindley, Bot. Reg. t. 1932. 
Willdenow). — Persoon, Syn. ii. 37. — Poiret, Lam. Dict. Anthomeles flava, Roemer, Fam. Nat. Syn. iii. 142. 
Suppl. iv. 69 (excl. syn. Moench). Anthomeles glandulosa, Roemer, Fam. Nat. Syn. iii. 141. 
Mespilus Caroliniana, Poiret, Zam. Dict. iv. 442.—Des- Anthomeles turbinata, Roemer, Fam. Nat. Syn. iii. 142. 
fontaines, Hist. Ard. ii. 156. — Du Mont de Courset, Bot. Pheenopyrum Carolinianum, Roemer, Fam. Nat. Syn. 
Cult. ed. 2, vy. 449.—Schmidt, Oestr. Bawmz. iv. 82, t. iii. 152. 
212. — Sprengel, Syst. ii. 507. Mespilus flexispina, Koch, Dendr. i. 189 (not Moench). — 
Wenzig, Linnea, xxxviii. 127. 
A tree, twenty to twenty-five feet in height, with a straight stout trunk ten or twelve inches in diam- 
eter, dividing, five or six feet from the ground, into short spreading often pendulous branches which form 
a handsome compact round head ; or often a wide much-branched shrub only a few feet high. The bark 
of the trunk varies from half an inch to an inch in thickness and is dark brown tinged with red or 
nearly black and often deeply furrowed, the surface being broken into small square persistent scales. 
The branchlets are at first villose-pubescent with long pale hairs, and often puberulous in their first 
winter but ultimately glabrous ; they are slender, very zigzag, unarmed, or armed with straight stout spines 
an inch to an inch and a half in length, and are red-brown, dark gray-brown, or nearly black. The 
winter-buds are globose, one sixteenth of an inch in diameter, and covered with bright chestnut-brown 
orbicular scales slightly scarious on the margins; the scales of the mner ranks at maturity are spatu- 
late, rounded at the apex, glandular-serrate, and often half an inch in length. The leaves are rhombic- 
ovate to obovate-cuneiform, three to five-ribbed, with obscure reticulated veinlets, rounded and sometimes 
abruptly contracted into short points, gradually narrowed below into broad winged glandular petioles, 
glandular-serrate with large dark glands, often incised and three to five-lobed on vigorous shoots; when 
they unfold they are puberulous above and pubescent below, especially along the principal veins, and 
at maturity are subcoriaceous, yellow-green and lustrous on the upper, and pale and sometimes pubescent 
on the lower-surface, an inch to an inch and a half long, two thirds of an inch to an inch and a quarter 
broad, and borne on glabrous or pubescent petioles which vary from half an inch to an inch and a half 
in length. The stipules are glandular-serrate, linear, acute, pubescent, and a quarter of an inch long, or 
on vigorous shoots are foliaceous, stalked, obovate or lunate, variously and irregularly lobed and incised, 
and sometimes nearly an inch in length. The flowers, which appear m March and April when the 
leaves are almost fully grown, are half an inch across when expanded and are produced in simple one 
to four-flowered thick-branched corymbs ; these, like the obovate glandular-serrate caducous bracts and 
