174 JOURNAL OF THE ARNOLD ARBORETUM (vol. ii 



in the leaves or fruiL of his type specimen collected in southeastern Vir- 

 ginia, a region where F. pennsyhajiica does not occur. Other specimens 

 of F. caroUnlana with pubescent leaflets and branchlets in the herbarium 

 of the Arboretum were collected beyond the region inhabited by F. Tpenn- 

 sylvanica and are referred to this variety 



Virginia, Isle of Wight County, banks of Blackwater River near 

 Zuni, A. Rehdcr (type), August 19, 1905. 



Florida. Taylor County, swamp near the coast, T. G. //arf^/,son, Septem- 

 ber 8, 1918. 



Louisiana. Tangipahoa Parish; Ponchatoula, C, S. Sargtnt, March 29, 

 1917, near Ilanimond, C. S. Sargent, March 30, 1917. 



NEW SPECIES, VARIETIES AND COMBINATIONS FROM THE 

 HERBARIUM AND THE COLLECTIONS OF THE ARNOLD 



ARBORETUM ^ 



Alfred Rehder 



VITACEAE 



Ampelopsis Michx. 



Ampelopsis brevipedunculata Koehne, Deutsch. Denclr. 400 (1893), 

 Cums {Ampelopsis) brevipcdunculata Maximowicz In M6m. Acad. Sci. Div. 

 Sav. St. P<5tersbourg, ix. 08 (Prim. Fl. Amur.) {1859),— Cissus humulifolia 

 p. brevipedujiculata Regel in Mom. Acad. Sci. St. P^tersbourg, ser. 7, iv. 

 No. 4, p. 35 (Tent. Fl. Ussur) (18Cl). — Viiis heterophylla a. cordata Regel 

 in Gartenfl. xxii. 197 (1873), excl. planta americana. — /I. hetcrophyUa 

 var. /3. amuren^s Planchon in De Candolle, Monog. Phan. v. 45C (1887). — 

 Rehder in Bailey, Stand. Cycl. Hort. i. 278, fig. 191 (1914). —^. hetero- 

 phylla var. y. Lavallei Planchon, 1. c. (1887). — U///^ brevipcdunculata 

 Dippcl, Ilandb. Laubholzk. ii. 564, fig. 267 (1892). — Vitis amurensis hort, 

 ex Dii)pel, 1. c. (1892), pro synon., non Rui)r. 



The plant originally described by Thunberg as Vitis heterophylla belongs 

 to the genus Ampelopsis and is generally known as A. heterophylla Sieb. & 

 Zucc, but unfortunately this name cannot be retained, on account of the 

 older A. heterophylla Blunie (Bijdr. 194 [1825]) which is under the genus 

 Anii)elopsis the valid name of the plant named by Planchon LanduJda 

 Landuk {Cissus Landuk Hassk., Vitis Landuk Mi(i.) and by Gagnci)ain 

 Parthenoci'ssiis Landuk,^ but for which the correct combination under 



^ C\>ntinuc(i from p. 128. 



^ As Cagnt'pain has shown (in Bull. Soc. Hist. Nat. Autun, xxiv. 10 [lUUl), the genua 

 Landukia cannot be generically separated from Parthenocissus and he, therefore, unites the 

 two genera choosing the name Parthenocissus for the group. Though Landukia has page 

 priority over Parthenocissus, it shouhl not he used as the name for the group, as the Inter- 

 national Uules of Botanical Nomenclature do not recognize page priority, but rule, according 

 to article 46, that an author who unit<'s two or more genera of the same date may choose, 

 and that his choice cannot be modified by subsequent authors. Moreover, Parthenocissus 

 is a nomcn conscrvandum and should be retained '*eu tous cas.'* 



