HYDRANGEA 



HYDRIASTELE 



1623 



4-8 in. long: bracts at the base of the cyme large, 

 orbicular; smaller bracts none: fertile fls. blue or pink- 

 ish, sterile ones whitish: caps, with the calyx at the apex: 

 styles usually 2. Aug. Japan. S.Z. 63. J.H. III. 

 32 : 103. H. Sapphire, intro. 1890, seems to belong here. 

 Var. hortensis, Maxim. Fls. double, usually pink and 

 often proliferous. S.Z. 64. F.S. 3:187. 



AA. Shrubs climbing by aerial rootlets: petals cap-like, 

 cohering, falling off as a whole. 



15. petiolaris, Sieb. & Zucc. (H. scdndens, Maxim., 

 not DC. H. volubilis, Hort.). Climbing to 80 ft. in 

 Japan: Ivs. long-petioled, broadly ovate-cordate to 

 elliptic, acute or acuminate, serrate, almost glabrous, 

 2-4 in. long: cymes rather loose, 8-10 in. across, with 

 rather few sterile fls.; stamens 15; styles usually 2: 

 caps, with the calyx at the apex. July. Japan, Saghalin. 

 B.M. 6788. S.Z. 54, 59, 2, 92. M.D.G. 1897:236, 237. 

 S.H. 2:191, 193. Gn. 62, p. 248; 64, p. 219. G. 35:461. 

 A very variable species, figured and described by Sieb. 

 & Zucc. under 3 different names. In gardens it is often 

 met with under the name of Schizophragma hydran- 

 geoides, another Japanese climber of similar habit, 

 which, however, is easily distinguished by its sinuately 

 dentate Ivs. and its sterile fls. having only 1 large 

 cordate sepal. 



16. anomala, Don (H.aUissima,Wall.). High climb- 

 ing, glabrous: Ivs. ovate to elliptic-ovate or ovate- 

 oblong, broadly cuneate at the base, denticulate- 

 serrate, 2-4 in. long; petioles %-2 in. long: cymes 

 loose, puberulous, 4-6 in. across; stamens 10; sterile 

 fls. few or sometimes wanting, about 1 in. across, with 

 suborbicular sepals. July. W. China, Himalayas. 

 Wallich, Tent. Flor. Nepal. 50. 



H. dspera, Don. Shrub, to 20 ft., similar to H. strigosa: Ivs. 

 oblong-lanceolate, fimbriate-denticulate, densely villous beneath: 

 sepals usually toothed: styles usually 3. Himalayas. Tender. H. 

 canescens, Koch (H. arborescens X H. radiata). Very similar to H. 

 cinerea, but the hairs smooth or nearly smooth under the micro- 

 scope, in H. cinerea tuberculate. Garden origin. H. hirta, Sieb. & 

 Zucc. Shrub, to 4 ft.: Ivs. broad-elliptic, coarsely incised-serrate: 

 cymes without sterile fls. Japan. S. Z. 62. Not very decorative. 

 H. longipes, Franch. Allied to H. Rosthornii. Lvs. thinner, smaller, 

 more coarsely serrate, sparingly strigose or glabrescent below; 

 petioles 2-7 in. long. Cent, and W. China. H. robusta, Hook. f. & 

 Thorns. (H. cyanema, Nutt.). Closely related to H. Rosthornii. 

 Spreading shrub, to 15 ft., with large ovate Ivs., pubescent on both 

 sides: sterile fls. with toothed sepals. Himalayas. B. M. 5038. 

 Handsome in bloom, but tender. H. rdseo-paniculata, Foucard. 

 Supposed to be a hybrid of H. paniculata and H. opuloides. Fls. 

 rose-carmine. R. H. 1912, p. 324. //. villdsa, Rehd. Allied to H. 

 strigosa. Branchlets, petioles and cymes clothed with spreading 

 villous hairs: Ivs. strigose above, with a rough woolly tomentum 

 below, 4-7 in. long. W. China. Var. strigdsior, Rehd. Branchlets 

 and petioles with shorter and fewer or without spreading hairs: Ivs. 

 smaller. H. rirens, Sieb. Slender shrub, to 6 ft. : Ivs. elliptic or 

 lanceolate, coarsely serrate, 1-2)4 in- cymes rather few-fld., sterile 

 fls. with 3 or 4 large, unequal sepals, white. Japan. S. Z. 60. A 

 desirable shrub, with graceful and delicate fls. and with the Ivs. 

 often handsomely variegated along the veins, but tender. 



ALFRED REHDER. 



HYDRASTIS (name of doubtful meaning). Ranuncu- 

 lacese. Hardy herbaceous perennials, grown in a few 

 gardens for their showy leaves and beautiful red fruit. 

 The roots are ground when dry and used for medicine. 



Stem erect, pubescent: Ivs. palmately 5-7-lobed, 

 serrate: fls. greenish white, small, solitary; sepals 3, 

 petal-like, falling early; petals none; stamens many: 

 carpels 2-ovuled, in fr. becoming aggregated berries. 

 Two species, 1 from Japan and 1 from N. Amer., 

 the former (H . jezoensis, Sieb.) apparently not in cult. 



Moist situations in good, rich loam with plenty of 

 leaf -mold are required. Seeds may be sown in moist, 

 shaded soil of a sandy nature. This is done in fall or 

 early spring. The seeds should be covered very slightly 

 but a mulch or covering is helpful. Plants which have 

 grown in one place for a number of years are easily 

 propagated by division of the roots in late fall or early 

 spring. The commercial cultivation of goldenseal for 

 medicinal purposes is explained in Farmers' Bulletin 

 No. 613 (United States Department of Agriculture) by 

 Walter Van Fleet. 



canadensis, Linn. ORANGE ROOT. GOLDENSEAL. 

 St. 4-10 in. long, from a thick, yellow rootstock: basal 

 Ivs. 5-8 in. broad; st.-lvs. 2, lower one petioled, upper 

 sessile and near the small fl. : fr. in ovoid raspberry-like 

 head, the &-12 fleshy carpels tipped with a short, curved 

 beak. April. E. U. S., as far south as Mo. and Ga., in 

 rich woods. B.M. 3019 (in flower); 3232 (in fruit). 



K. C. DAVIS. 



HYDRIASTELE (Greek, water and column; the tall 

 trunks growing near springs). Palmdcese, tribe Arecese. 

 A monotypic genus containing a tropical Australian 

 palm advertised sometimes as Kentia Wendlandiana. 

 This may belong to Exorrhiza, which see. If it is a 

 true Hydriastele, however, it is told from the kentias 

 in foliage by the leaf-segments split at the apex instead 

 of acuminate and not split. 



1933. Hydrangea hortensis var. otaksa. 



More fundamentally, Hydriastele differs in having 

 the ovule on the side of the cell instead of at the bot- 

 tom, as in Kentia. In this respect it agrees with the 

 group of genera mentioned under Hedyscepe, but it 

 differs from that group in having the fls. borne in 4 

 ranks instead of spirally. Hydriastele is a spineless 

 palm with erect winged caudex: lys. terminal, pinnati- 

 sect; segms. alternate, linear, split at the apex; mid- 

 veins covered below with caducous scales; margins thin; 

 rachis laterally compressed, dorsally convex; face of 

 the petiole concave; sheath rather short: spadices with 

 short, wide peduncles, branched from the base, the 

 branches obtusely quadrate, long, slender, pendulous: 

 spathes 2, complete, compressed, deciduous, the lower 

 one ancipital: bracts and bractlets connate: fr. small, 

 ellipsoidal, smooth or ribbed. 



This distinct and excellent palm has hitherto been 

 rare, but now that the seeds are being produced in tropi- 

 cal nurseries it is fast becoming popular. The seeds are 

 round, fairly hard, and resemble those of Archonto- 

 phcenix Alexandras. The characteristic leaves are 

 pinnatifid, the segments being irregular and somewhat 

 jagged at the apex, after the fashion of a fish-tail palm 

 or caryota. It stands the temperature of an ordinary 

 living-room better than many other palms. For rapid 

 growth it needs more heat than Howea Belmoreana and 

 H. Forsteriana. In the greenhouse a temperature of 

 60 to 70 is most congenial. A lower temperature will 

 not hurt it, but gives a slower and more compact growth. 

 It loves plenty of moisture, and frequent syringing is 



