ACANTHOPANAX 



ACANTHOPH(ENIX 



193 



81. Acanthopanax 

 licinifolium var. 

 Maximowiczii. 



(xM> 



BB. Fls. slender-pedicelled. 

 C. Lvs. usually 3-foliolate. 



trifoliatum, Schneid. (Zanlhdxylum trifolialum. Linn. 

 A. aculeatum, Seem. A. sepium, Seem.). Climbing 

 shrub, to 20 ft.: branches with few hooked spines: 

 petiole 1-1 ^2 in. long: Ifts. 

 stalked, ovate to ovate- 

 lanceolate, acuminate, 

 in. long, remotely and finely 

 serrate, glabrous, light green 

 beneath: the slender-pedun- 

 cled umbels in terminal 

 whorls; pedi- 

 cels slender; 

 styles 2, con- 

 n a t e to the 

 middle. China, 

 H i m al a y a s . 

 L.B.C. 10:977 

 (infl. abnor- 

 mal; a better 

 figure is found in Jacquin, 

 Icon. PI. Rar. 3:634). Re- 

 cently intro. from China. 



setchuenense, Harms. 

 Upright shrub, to 10 ft.: 

 branches yellowish, with few 

 nearly straight prickles: 

 petiole 2-4 in. long: Ifts. 

 stalked, ovate-oblong, acu- 

 minate, lYr^y-i. in. long, ser- 

 rate, glabrous, glaucous be- 

 neath: umbels several at the 

 end of the branches, peduncles Yy-\ in. long, pedicels 

 slender; ovary 5-celled, styles connate into one. W. 

 China. 



cc. Lvs. S-7-foliolate. 



senticosum, Harms (Eleutherocdccus senticdsus, 

 Maxim.). Shrub, to 15 ft.: branches upright, densely 

 covered with slender prickles: Ifts. 5, occasionally 3, 

 stalked, elliptic-obovate to oblong, shortly acuminate, 

 narrowed at the base, 3-5 in. long, sharply and doubly 

 serrate, bright green; when young, with brown hairs 

 on the veins beneath and with scattered hairs above: 

 umbels long-peduncled, several at the end of the 

 branches; ovary 5-celled, styles connate: fr. about }^ 

 long. July. N. China, Manchuria. Gt. 12:393. 



pentaphyllum, Marsh. (A . spinbsum ; Hort., not 

 Miq. Aralia pentaphylla, Thunb.) Fig. 82. 

 Shrub, 5-10 ft. : branches arching and slender, 

 with few compressed, straight 

 prickles : Ifts. 5-7, oblong-obovate 

 or oblong -lanceolate, cuneate, 

 acute, %-\ % in. long, crenate- 



serrate, smooth: fls. green, in slender-peduncled um- 

 bels, solitary on spur-like branchlets along last year's 

 branches; styles 5, connate. Japan. A graceful shrub, 

 with arching branches and bright green, shining foliage, 

 excellent on rocky banks and slopes. Only the pistil- 

 late form seems to be in cult., but produces no fr. for 

 want of pollen. Var. variegatum, Hort. Lvs. edged 

 white. F.S. 20:2079. Possibly a variety of A. spino- 

 Kum. Also A. quinqitffolium variegatum, Veitch Cat., 

 may be the same. 



A. divaricrttum. Seem. Allied to A. sessiliflorum. Lfts. 5, downy 

 b.ncath: fls. pedicelled. Japan. S.I.F. 2:56. .4. lltnrui. Harms 

 (Kleutherococcus Henryi, Oliver). Allied to A. scssilinorum. 

 Branches with few hooked prickles: Ifts. 3-5, nearly sessile, cuneate 

 at the base, oblong, 2-3 in. long: fls. pedicelled. Cent. China. B.M. 

 *s31C. A. Innomm, Franch. & Sav. Unarmed small tree: Ivs. 

 fascicled 3-foliolate, occasionally 2-foliolate or undivided and cor- 

 date; Ifts. nearly seswilr. nhibrous: umbels paniculate. Japan. 

 A. leucorrhizum, Harms. Allied to A. senticosum. Branches only 

 below the petiole with several straight reflexed prickles: Ifts. 

 oblanceolate, glabrous: umbels solitary or few. Cent. China. A. 

 sciadopfiyll'nlt'x, I'mni'li. A: S:tv. Unarmed tree, to 40 ft.; Ifts. 5, 

 stalked, nearly glabrous: umbels forming large terminal panicles. 

 Japan. S.I.F. 2:55. .1. .Si'mAni'i, Schneid. Allied to A. senticosum. 



13 



Branches with several prickles below the petiole: Ifts. 5, prickly 

 on both sides, oblong. China. M.D.G. 1910:25. A. spinfaum, 

 Miq. Allied to A. ijontaphyllum. Lvs. often sparingly appressed- 

 srtnse above: peduncles shorter than petioles; styles 2, separate. 



' 1 "" 11 ALFRED REHDER. 



ACANTHOPHIPPIUM (meaning unexplained). 

 Sometimes spelled Acanlhephippium. Orchidacex. Stove 

 terrestrial orchids. 



Pseudobulbs conic or cylindric, of several internodes, 

 with several large, plicate-veined, jointed Ivs. at the 

 apex: fls. borne on a lateral leafless scape, in a few- 

 fld. raceme; the broad, fleshy sepals form an urn- 

 shaped tube, which incloses the narrower petals and 

 the lip ; lip jointed to the apex of the short, thick column 

 which is produced below into a foot to which the sepals 

 and petals are attached; pollinia 8. A genus of 4 

 species, natives of the E. Indies and Malay Archipelago. 



These are very rarely seen in cultivation, but are 

 warmhouse terrestrial orchids from the hottest moist 

 shaded jungles of Java. A compost of fibrous loam and 

 leaf-mold is best suited to them, keeping the plants in 

 the warmest house in winter. Propagate by dividing 

 the pseudobulbs in spring before growth has made 

 much advancement. (Orpet.) 



javanicum, Blume. Fls. yellow, flushed and striped 

 with purplish red, the sepals and petals spreading at the 

 tip. Java. J.F. 1:35. B.M. 4492. 



A. bicolor, Lindl. Fla. yellow, tipped and marked with purple. 

 A. Curtisii, Reichb. Fls. light rose, flushed and striped with purple. 

 The 5 keels between the side lobes serve to distinguish this from 

 related species. Malay Archipelago. A, sylheUnae, Lindl. Fla. 

 about 2 in. long, white. Himalayas. GEORGE V. NASH, f 



ACANTHOPHffiNIX (acantha, thorn, and phoenix, 

 a date palm). Palmacese, tribe Arkcex. Very elegant 

 greenhouse palms. 



Leaves pinnate, finely dissected, more or less armed 

 with long, slender, brown or black spines; Ifts. narrow, 

 linear-lanceolate, acute, rarely acuminate, prominently 

 veined above, scaly beneath, the margins revolute; 

 rachis 3-angled in sections; sheath long, smooth or 



82. Acanthopanax 



pentaphyllum. 



(XH) 



spiny: infl. (spadix) twice branched, 

 sometimes smooth, but often hairy or 

 even spiny, hanging by a short, stout 

 stalk; the secondary branches slender 

 .or sometimes thick and twisted: 

 spathes 2, flattened, soon falling: fls. 

 monoecious, in spirally disposed 3-fld. clusters, red, 

 pinkish or orange; inner segms. of the perianth val- 

 vate in male fls., imbricate in female fls. ; stamens 12, 

 reduced in the pistillate fls. to a ring of functionless 

 staminoidea: fr. black, about twice the size of a grain 

 of wheat. There are only 3 or 4 species, confined 



