Tas. 8623. 
CORYLUS MANDSHURICA. 
Eastern Asia. 
CUPULIFERAE. Tribe CoRYLEAE. 
Corytvus, Linn.; Benth. et Hook. f. Gen. Plant. vol. iii. p- 406. 
Corylus mandshurica, Maxim. in Bull. Phys.-Math. Acad. Pétersb. vol. xv. 
3 (1856), p. 187; Ruprecht, Dec. Plant. Amur. t. 10; Herder in Act. Hort. 
Petrop. vol. xi. p. 863; Burkill in Jowrn. Linn. Soe. vol. xxvi. p- 505; 
Komorov in Act. Hort. Petrop. vol. xxii. p. 63 (C. manshurica) ; 
C. K. Schneider, Handb. der Laubholzk. vol. i. p. 150, fig. 83 1-m et 
fig. 87 d-f(C. mandschurica) ; Nakai in Jowrn. Coll. Sci. Tokyo, vol. xxxi. 
p- 206; Bean, Trees and Shrubs, vol. i. p. 402; species C. rostratae, Ait., 
valde affinis, sed novellis majus pilosis, foliis latioribus subtus majus pilosis 
foliis latioribus subtus majus pilosis supra mediam saepe inciso-lobatis, 
petiolis saepius longioribus differt. 
Frutex usque ad 4°5 m. altus ramulis junioribus puberulis vel sparsim pilosis 
vel hirsutis demum glabrescentibus. Folia suborbicularia, elliptica vel 
ovata, 6-15 cm. longa, saepius 8-10 cm. lata, irregulariter duplicato-serrata, 
apice acuminata vel subtruncata, supra mediam saepe plus minusve 
profunde inciso-lobata, basi leviter cordata, utrinque parce vel subtus 
praecipue ad nervos sat dense molliter pubescentia; petiolus 1-3 cm. 
(saepius 1°5 cm.) longus. Stipuiae ellipticae vel ovatae, acutae vel 
acuminatae, 7-8 mm. longae, 3-5 mm. latae, integerrimae vel interdum 
paucidentatae. Amenta mascula solitaria, bini vel terni; squamae 
deltoideae, cuspidatae, hirsutae. Fructus 2-6 aggregati, saepe rudimentis 
fructuum immixti. Involwerwm nucem arcte involvens, superne in tubum 
productum, parte inferiore praecipue pilis setoso-hispidis flavo-brunneis 
dense vestitum; tubus 2°5-3°5 em. longus, cylindricus vel basi paulum 
ampliatus, leviter pluri-striatus, apice obliquus, plus minusve laciniatus. 
Nu (immatura) depresso-subglobosa, circiter 1 cm. longa et 1°2 cm. lata, 
breviter mucronata, minute puberula.—C. rostrata, Ait., var. mandshu- 
rica, Regel in Bull. Phys.-Math. Acad. Pétersb. vol. xv. p. 221 et FL 
Ussur. p. 141; DC. Prodr. vol. xvi. pars 2, p. 183; Hance in Journ. Linn. 
Soe. vol. xiii. p. 87; Maxim. in Mél. Biol. vol. xi. p. 319; Palibin in Act. 
Hort. Petrop. vol. xiv. p. 139; Winkler in Engl. Pflanzenr.—Betulaceae, 
p. 52.—S. A. Skan, : 
The Manchurian Hazel belongs to a group in which 
the involucre is prolonged beyond the nut into a tube 
sometimes measuring 1} in. long, and is covered, particu- 
larly in the lower part, with yellowish bristly hairs. Its 
affinities with the Eastern North American C. rostrata, 
Ait., are so evident that it is not always easy to distin- 
guish it. In C. mandshurica, however, the leaves are 
usually broader and are often more or less deeply lobed 
Avueust, 1915, 
