AMORPHOPHALLUS 



AMPELOPSIS 



277 



recurved: If. 2-3 ft. across. Congo. I.H. 34: 23; 42, p. 380. A. 

 nicoaus Lem., I.H 12:424 = Dracontium asperum. A. oncup/iiillua, 

 Pram. Spathe 6-7 in. long, the tuber broadly ovoid, white, striped 

 and spotted, the limb brown-purple with yellow spots: Ivs. tripin- 

 natifidV Andaman Arch. B.M. 7327. .4. Pnkirui, Hook. f. Tuber 

 6-10 in diam., not bulbiferous: Ivs. 3-5 ft. tall, the petiole green, 

 mottled gray-white on red: spathe-tube 2 in. long, pale green spotted 

 white, the limb 6-8 in. across, yellow, purple-brown inside at base. 

 Perak. A. K(z, Prain. A larger plant than A. campanulatus, the 

 tuber 1 ft. across: Ivs. 5-6 ft. tall, the petiole purplish, marked gray 

 and green: spathe campanulate, 12-18 in. across, pale red-purple; 

 spadix with an appendage 10-14 in. long. Java. A. sativus, Blume. 

 Petiole 2-3 ft. tall, rugose, rough, white marked, each division of the 

 blade pinnate-parted, the costa thick, white. Molucca Isls. A. 

 Sckwein/urthii. N. E. Br. Spathe broad, reddish brown. E. Afr. 

 A. Titanum, Beccari. One of the most remarkable plants known. 

 Tuber 5 ft. in circ.: If. -stalk 10 ft.: If.-blade 45-ft. in circ.: spathe 

 3 ft. in diam.; spadix 6 ft. high. Bloomed at Kew in 1890, the tuber 

 .lying thereafter. Sumatra. B.M. 7153-5. G.C. III. 5:748 (as con- 

 ophallus). .4. tariabilis, Blume. Lvs. pinnatisect: spathe erect, 5 

 in long, white inside, spotted outside, the margin rosy. Java and 

 Philippines. G.C. II. 6: pp.680, 681 (as Brachy-spatha). J.H. III. 

 33: 493; 63: 283. A. virdsus, N. E. Br. Spathe green externally, 

 suffused with purple and spotted, internally lurid purple. Siam. 

 B.M. 6978. L. H. B. 



GEORGE V. NASH. 



AMPELOPSIS (Greek ampelos, vine, and opsis, like- 

 ness). Vilacex. Ornamental woody vines with hand- 

 some deciduous foliage and some species with orna- 

 mental fruits, used for covering trellis-work, pergolas, 

 arbors, low walls and the like. 



Shrubs, climbing by tendrils: branches with close 

 lenticillate bark and white pith and with tendrils 

 opposite the Ivs. : Ivs. alternate, petioled, simple, lobed, 

 digitate, pinnate or bipinnate: fls. small, greenish, 

 perfect, in diehotomous long-peduncled cymes opposite 

 the Ivs. or terminal; calyx indistinct; petals 5, or rarely 

 4, expanding; stamens as many as petals, short; ovary 

 2-celled with a slender style, adnate to a distinct cup- 

 shaped disk, entire or crenulate at the margin: fr. a 

 1-4-seeded berry. About 20 species in N. Amer., 

 Cent, and E. Asia. By some botanists united with Vitis, 

 which is easily distinguished, even in the winter state, 

 by its shredding bark and brown pith, also by the panicu- 



191. Ampelopsis heterophylla var. amurensis. ( x 



late infl. and the petals cohering into a cap and falling 

 off as a whole; more closely related to Parthenocissus, 

 which differs chiefly in its disk-bearing tendrils and the 

 absence of a distinct disk in the fl.; still more closely to 

 Cissus, which differs in the fleshy sts., usually 4-merous 

 fls. and 4-lobed disk. Monogr. by Planchon in De 

 Candolle, Monographiac Phanerogamarum, 5:447-463. 



tricolor, 4. 

 tripartite, 5. 

 tvberota, 7. 



The members of this genus are shrubs, climbing, 

 with twining tendrils, not clinging by disks to its sup- 

 port, of medium height, with variously divided, rarely 

 simple foliage, small greenish flowers, in peduncled 

 cymes, followed by blue or yellow pea-sized berries. Most 

 of the species are hardy North, but A. japonica, A. 

 megalophylla and A. arborea are only half-hardy, while 

 A. cantoniensis and A. leeoides can be grown only in 

 warmer temperate regions. Page 3565. 



They are not particular as to the soil and situation 

 but grow best in fresh and loamy land. Where only a 

 light covering is desired, species like A. japonica, A. 

 acanitifolia and A. arborea should be planted; A. 

 heterophylla var. amurensis makes a rather dense cover- 

 ing and is well suited for the covering of parapets, low 

 walls and rocks; A. megalophylla is a very strong grower, 

 with bold foliage. Some species, as A. heterophylla and 

 particularly its var. amurensis are very ornamental in 

 autumn with their bright blue profusely produced 

 berries. 



Propagation is by seeds and by hardwood or green- 

 wood cuttings. All species may be propagated by 

 cuttings with a good eye, placed in sandy soil under 

 bell-glasses in September. 



INDEX. 



aconitifolia, 5. cordata, 3. nnpi/ormis, 7. 



affinis, 5. Delavayana, 6. palmiloba, 5. 



amurensis, 4. dissecta, 5. rubricaulis, 5. 



arborea, 8. elegans, 4. serjanise folia, 7. 



bipiniuUe, 8. heterophylla, 2,4,6. Sie6oWt'i, 4. 

 brevipedunculata, 4. humulifolia, 1. 



cantoniensis, 10. japonica, 7. 



cinerea, 2. megalophylla, 9. 



citrulloides, 4. micans, 2. 



A. Lvs simple or lobed. 

 B. Under side of Ivs. whitish: Ivs. of firm texture. 



1. humulifolia, Bunge. Lvs. broadly ovate, 3-5- 

 lobed, sometimes only slightly so, 3-5 in. long, truncate 

 or subcordate at the base, acute or acuminate, bright 

 green and lustrous above, glaucescent and glabrous or 

 hairy beneath: cymes slender peduncled: fr. few and 

 small, usually pale yellow with bluish cheek, or pale 

 yellow or entirely pale blue. N. China. This species 

 has been always confused with A. heterophylla, from 

 which it is easily distinguished by the firmer texture of 

 Ivs., their pale whitish under side and the color of the 

 frs. It is very hardy and the foliage has the appearance 

 of that of a true Vitis. 



2. micans, Rehd. (Vitis repens, Veitch, not Wight 

 & Am.). Shrub, climbing to 20 ft.: young growth 

 purplish: branchlets glabrous: Ivs. triangular-ovate 

 and not lobed or broadly ovate and slightly 3-lobed, 

 subcordate or sometimes truncate at the base, short- 

 acuminate, the lobes acute, coarsely crenate-serrate, 

 dark green and with a velvety sheen above, glauces- 

 cent below, 2-4 in. long: cymes long-stalked and rather 

 dense: fr. dark blue. Cent. China. Has proved hardy 

 at the Arnold Arboretum. Var. cinerea, Rehd. (A. 

 heterophylla var. cinerea, Gagnep.). Lvs. grayish 

 pubescent on both sides or only below, often deeply 

 3-5-lobed. 



BB. Under side of Ivs. green: Ivs. membranous. 



3. cordita, Michx. (Vllis indiiAsa, Willd. Cissus 

 Ampeldpsis, Pers.). Nearly glabrous: Ivs. cordate, 

 roundish-ovate, not or slightly 3-lobed, acuminate, 

 acutely serrate, pale green beneath, usually pubescent 

 on the veins: cymes loose, slender-stalked : berries bluish 

 or greenish. From 111. and Ohio south. Mn.N. 2:6. 



4. heterophylla, Sieb. & Zucc. (VUis heterophylla, 

 Thunb.). Branchlets glabrous or hairy: Ivs. cordate, 

 3-5-lobed, with rounded sjnuses, sometimes slightly 

 3-lobed, lobes serrate or incised, shining green beneath 

 and usually glabrous or sometimes hairy, lJ^-3 in. 

 long: cymes on stalks J^-2H in. long: fr. changing from 

 pale lilac to verdigris color and finally bright blue or 



