MISSOURI BOTANICAL GARDEN. 
WINTER SYNOPSIS. 
Hicoria, Kaf . Carya, Nutt. 
Pith not chambered (but sometimes cracking across at 
intervals when dry) ; buds frequently superposed, subnaked 
to evidently scaly, the lateral sometimes inclosed in a sac 
soon splitting at top, and often stalked; vernation of 
leaflets involute-convolute (pi. 23, f . 1 ) ; catkins not elon- 
gating until spring; fruit with the husk parted at least 
near the top, and usually deciduous. 
* Bud scales 4 to 6, valvate in pairs, often with apical lobes and in 
some species more or less enlarging into leaves in spring, conspicuously- 
yellow dotted (except sometimes in the first) ; larger lateral buds often 
long stalked; staminate catkins from lateral buds of the preceding year 
as well as at base of the new growth. — § Pacania or Apocarya. 
•k- Outer bud scales more or less fused, loosening at base ; terminal 
1. H. Pecan (Marshall) Britton. Carya oUvaeformis, 
Nuttall.— The Pecan.— A large tree: bark thick, buff 
gray, deeply fissured but not .shaggy; twigs gray, with a 
shade of buff, dull, from tomentose-hlrsute becoming 
nearly glabrous, the minute pale lenticels mostly inconspic- 
uous the fir.'-t year; buds elongated, gray, the terminal 
oppressed, pubescent and yellow-glandular, the lateral 
soon nearly or quite glabrous; fruit 1 to 2 in. long; hu<k 
2 to 3 mm. thi< k, si>litting to the ba^e, often persi'>tei>t on 
the tree after the nut falls; nut ovoid to ollipsoitl, more or 
less pointed at the en<ls, brown, irregularly tleckf'<l and 
striped with a darker color, 2-celled : shell tiriu, x-arcoly 
1 mm. thick, the commissure w<'ak and brown-spongy in 
the center; kernel .sweet, little ruminated. — I(>v\a to 
southern Indiana, Kentucky, Loui>iaua and Texas, ext(n\d- 
ing into Mexico, — in river bottoms. — PI. 1, 2, 13, f, 1-3, 
16, f. 7-11. 
