860 



CORYLUS 



CORYPHA 



DD. The involucre about twice as long as the nut, usually 

 tightly inclosing the nut. 



7. americana, Walt. Shrub, 3-8 ft. : young branch- 

 lets pubescent and glandular bristly : Ivs. slightly cor- 

 date or rounded at the base, broadly ovate or oval, 

 irregularly serrate, sparingly pubescent above, finely 

 tomentose beneath, 3-6 in. long: involucre compressed, 

 exceeding the nut, the 2 bracts sometimes more or less 

 connate, with rather short, irregular, toothed lobes: 

 nut roundish ovate, about %in. high. From Canada 

 to Fla. west to Ont. and Dak. Var. calyculata, Winkl. 

 (C. calyculata, Dipp.). Involucre with 2 very large 

 bracts at the base. 



AA. Husk or involucre tubular, narrowed above the nut 



and forming an elongated beak. 



B. Involucre finely pubescent outside with rather wide 



gradually narrowed beak. 



8. maxima, Mill. (C. tubuldsa, Willd.). Shrub, 

 sometimes small tree, to 30 ft. : Ivs. cordate, roundish- 

 ovate, slightly lobed and doubly serrate, 3-6 in. long: 

 involucre finely pubescent outside: nut oblong, large; 

 kernel with thin red or white skin. S. Eu. H. W. 2, p. 30. 

 Winkl. 49. Var. purpftrea, Rehd. (C. Avellana purpurea, 

 Loud. C. maxima var. atropurpurea, Dochnahl). Lvs. 

 deep purplish red darker than in C. Avellana atropur- 

 purea. F.E. 21:325. Many varieties, with large nuts, 

 known as filberts or Lambert's filberts. The cult, forms 

 are partly hybrids with C. Avellana. 



BB. Involucre densely beset with bristly hairs, and 



usually rather abruptly constricted into a narrow beak. 



c. Petioles usually longer than %in. 



9. mandshftrica, Maxim. (C. rostrdta var. mands- 

 churica, Regel). Shrub ; to 15 ft.: young branchlets 

 pubescent: Ivs. suborbicular to elliptic or obovate, 



long as the nut, narrowed toward the apex. Japan. 

 S.I.F. 1:20. 



cc. Petioles shorter than 



1075. Corylus rostrata. 



(XH) 



doubly serrate and slightly sinuately lobed, pubescent 

 beneath, 3-5 in. long: involucre thickly beset with 

 brown spreading bristles, about 2 in. long, about 3 

 times as long as the nut, divided at the the apex into 

 narrow entire segms. Manchuria, Korea. Winkl. 49. 



10. Sieboldiana, Blume (C. rostrata var. Sieboldiana, 

 Maxim.). Shrub, to 15 ft.: Ivs. elliptic to oblong or 

 obovate, usually rounded at the base, doubly serrate 

 and slightly lobed, 2-4 in.; the young Ivs. often with a 

 purple blotch in the middle: involucre with less stiff 

 bristles, about 1^ in. long, 2 or sometimes 3 times as 



11. rostrata, Ait. Fig. 1075. Shrub, 2-6 ft.: 

 branchlets pubescent or glabrous, not bristly: Ivs. 

 rounded or slightly cordate at the base, oval or obo- 

 vate, densely serrate and sometimes slightly lobed, 

 nearly glabrous at length, except sparingly pubescent 

 on the veins beneath, 2j/-4 in. long: involucre densely 

 beset with bristly hairs, beak long and narrow: nut 

 ovoid, ^in. long. E. N. Amer., west to Minn, and 

 Colo. G.F. 8:345 (adapted in Fig. 1075). 



12. calif6rnica, Rose (C. rostrata var. califdrnica, 

 DC.). Allied to C. rostrata. Shrub, to 20 ft. : Ivs. more 

 villous beneath: involucre with a short beak, which is 

 often flaring and sometimes torn. Calif, to Wash. 



C. colchica, Alboff. Low shrub, to 3 ft. : Ivs. ovate or obovate, 

 densely doubly serrate, sparingly pilose: involucre connate, with 

 a short lacerated beak, pubescent. Caucasus. Winkl. 53. Not in 

 cult. C. colurnoides, Schneid. (C. intermedia, Lodd., not Fingerh., 

 C. ColurnaXC. Avellana). Similar to C. Colurna: small tree or 

 large shrub, bark darker: involucre shorter, scarcely glandular. 

 Garden origin. C. Fdrgesii, Schneid. (C. mandshurica var. Far- 

 gesii, Burkill). Tree to 45 ft.: Ivs. narrqw-obovate to oblong: 

 involucre soft-pubescent, sometimes only slightly so. W. China. 

 C. Jacquemdntii, Decne. (C. Colurna var. lacera, DC.). Allied to 

 C. chinensis. Tree: Ivs. ovate, lobed toward the apex, less pubes- 

 cent, 5-8 in. long: involucre pubescent, not constricted, lobes not 

 or rarely forked, often dentate. Himalayas. 



ALFRED REHDER. 



CORYNOCARPUS (Greek, dub-fruit, alluding to 

 the shape). Anacardiacese; by Engler made the sole 

 representative of Corynocarpdcese. A very few New 

 Zeal, and Polynesian evergreen trees, one of which is 

 intro. in Calif. Glabrous: Ivs. large, alternate, simple 

 and entire, without stipules: fls. perfect, small, whitish 

 green, inodorous, in terminal or sub terminal panicles; 

 calyx-lobes petal-like, unequal, 2 exterior smaller; 

 petals much like the calyx-lobes; stamens 5, opposite 

 the petals and shorter; staminodia 5, petal-like: fr. 

 drupaceous, narrowly ovoid, 1-seeded, the pulp said 

 to be edible; seed very bitter, poisonous. C. laevigata, 

 Forst. NEW ZEALAND LAUREL. Attractive leafy tree, 

 30-40 ft., the trunk sometimes more than 2 ft. diam.: 

 Ivs. to 8 in. long, elliptic-oblong or oblong-ovate, with a 

 short stout petiole, margins slightly recurved, suggest- 

 ing those of Magnolia grandiflora: fls. very small, 

 greenish or whitish, short-pedicelled, in a terminal 

 branched panicle; petals concave, little exceeding the 

 calyx-lobes: drupe \Y% in. or less long, orange-colored, 

 fleshy, plum-like. N. Zeal., in lowlands not far from 

 the sea. B.M. 4379. C. similis, Hemsl., and C. dis- 

 similis, Hemsl., from New Hebrides and New 

 Caledonia respectively, are not listed among 

 cult, plants. L H. B. 



CORYNOPHALLUS: Hydrosme. 



CORYNOSTYLIS (Greek, describing the club- 

 shaped style). Violdcese. A monotypic genus of woody 

 climbers, with alternate Ivs. and terminal racemes of 

 long-stalked violet-like fls. C. Hybanthus, Mart. & 

 Zucc. (Calyptrion Aubletii, Ging. Corynostylis Aubletii, 

 Hort.), is native of Trop. Amer. The Ivs. are 2-5 in. long, 

 ovate, or orbicular, bright green, serrate: fls. white, in 

 axillary showy racemes which are contiguous along the 

 st., long-spurred, 2 or 3 times as large as a violet, the 

 spur half-twisted. F.S. 21:2213. B.M. 5960. A hand- 

 some, vigorous warmhouse climber, and cult, in the 

 open in S. Calif. Prop, by cuttings and seeds. 



CORYPHA (Greek for summit or top, where the 

 leaves grow). Palmdcese, tribe Cdryphese. Tall fan- 

 leaved palms with a spineless stout trunk. 



Leaves terminal, large, orbicular, flabellately divided 

 to the middle into numerous linear-lanceolate segms.; 

 segms. induplicate in the bud; rachis none; ligule 

 small; petiole long, stout, concave above, spiny on the 



