JUGLANDEZA. 163 
pubescent scales, the outer acuminate, often with subulate points; leaflets in fives, 
ovate-lanceolate, acuminate, terminal ones acute at base, short-petioled, lateral ones 
sessile with an oblique semicordate base, sharply serrate with ascending or somewhat 
appressed fringed-pubescent serratures, pubescent (even in November) on the lower 
side, while (at that season at least) the petiole is glabrous; nut compressed, about 
1 inch broad, broader than high, 4-angled; husk thick, 4-valved beyond the middle. 
Near Carya alba, but with smaller buds, more pubescent leaves, closer, more appressed 
serratures ; leaflets about 4 inches long and 4 inch wide, or occasionally almost twice as 
large; wood dense, showing rapid growth, bark apparently scaly.” —Engelmann, MSS. 
2. Carya oliveformis, Nutt. Gen. N. Am. Pl. ii. p. 221; DO. Prodr. xvi. 2, 
p. 144. ; 
Juglans oliveformis, Marsh, Arbust. Amer. p. 105; Michx. Hist. Arbr. Forest. de ?Amér. Sept. i. 
p. 173, t. 3; Michx. N. Amer. Sylv. i. p. 167, t. 32. 
Carya tetraptera, Liebm. in Vidensk. Meddel. 1850, p. 80. 
Iuiinois, southward to Lovistana and Trexas.—NortH Mexico, region of San Luis 
Potosi, 6000 to 8000 feet (Parry & Palmer, 8354); Sourn Mzuxico, Oaxaca (Liebmann). 
Hb. Kew. 
2. JUGLANS. 
Juglans, Linn. Gen. Plant. n. 1071, pro parte; Benth. et Hook. Gen. Plant. iii. p. 398. 
Eight or nine species, widely dispersed in the northern hemisphere. 
1. Juglans mollis, Engelm. in Hemsl. Diag. Pl. p. 54. 
Arbor mediocris, cortice nigro; foliola 11-18, late ovata, acuta, basi obtusa vel subcordata, lateralia 
subsessilia, obliqua, terminale petiolulatum, omnia dense irregulariterque biserrata, subtus . 
tomentosa, supra demum fere glabra. Nua globosa, leviter compressa, longitudinaliter sulcata, 
circiter 12 poll. diametro maxima et 1} diametro minima, endocarpio crassissimo. 
Nort Mexico, mountains east of San Luis Potosi, 6000 to 8000 feet (Parry & Palmer, 
385). Hb. Kew. 
“Medium-sized tree, with black bark and very dark heart-wood; leaflets 11-13, 
ovate, acute, obtuse or subcordate at base, terminal one petioled, lateral ones subsessile 
and somewhat oblique (the upper half being the widest), all closely doubly or irregu- 
larly serrate; tomentose underneath, at last almost glabrate above; nut depressed- 
globose, slightly compressed, with shallow grooves between flat ridges extending from 
base to top; shell and partitions very thick, scarcely smaller than the cavities between 
them. A tree apparently of slow growth; bark of specimen collected $ inch thick, © 
sap-wood about | inch thick, showing thirty annual rings; heart-wood as dark as that 
of J. nigra; leaves 8-10 inches, leaflets 24-44 inches long by ¢-2 inches wide, strongly 
ribbed underneath, and soft pubescent to rusty tomentose when young ; nuts about - 
14 inch broad and 1} inch high. Allied to J. frutescens and J. californica, but with 
much larger nuts and broader leaves than any known North-American species. ‘The 
y 2 
