216 



ADENOPHORA 



ADIANTUM 



plants do not take kindly to division or other dis- 

 turbance of the roots. Many other species than those 

 in the trade are worthy. 



communis, Fisch. (A. lilifldra, Schur. A. Fischeri, 

 Don. A. lili/dlia, Ledeb.). Radical Ivs. petiolate, 

 ovate-rotund, cordate, crenate-dentate; cauline Ivs. 

 sessile, ovate-lanceolate, coarsely serrate: fls. numerous, 

 in a pyramidal panicle; lobes of the calyx triangular; 

 style exserted. 



Lamarckii, Fisch. Lvs. ovate-lanceolate, sharply 

 serrate, ciliate, otherwise glabrous: fls. racemose; lobes 

 of the calyx lanceolate; style not exserted. 



Potaninii, Hort. Shrubby: spikes 2-3 ft. high; fls. 

 IJi ' n - across, light blue. July, Aug. Intro. 1899. 



polymorpha, Ledeb. Three ft: Ivs. verticillate, the 

 whorls remote, and small fls. which are darker in color 

 than A. Potaninii. Aug. Russia. Var. stricta, with 

 more erect habit than the type, seems to be more 

 common. 



A. coronopifblia, Fisch. 1-3 ft.: radical Ivs. petiolate, ovate- 

 rotund, cordate, crenately toothed, hairy; upper Ivs. sessile, 

 entire or nearly so, glabrous, and linear lanceolate: fls". racemose, 

 3-10 in a cluster, blue, each fl. on a slender pedicel. June. Dahuria. 

 A. denticultUa, Fisch. (A. tricuspidata, DC.). 1 1 A~2 ft.: upper 

 Ivs. sessile, ovate-lanceolate, the lower and radical ones petioled 

 and more or less orbicular: fls. small, blue, pedicillate, in a terminal, 

 loose raceme. July. Dahuria. A. Gmellnii, Fisch. 1-2 J^ ft.: 

 Ivs., or at least the upper ones, linear, narrow, entire or nearly so, 

 and quite glabrous: fls. blue, 3-10 in a second racemose cluster 

 which is axillary near the upper part of the st. Dahuria. Suita- 

 ble for dry and stony places. A. intermedia, Ledeb., not Sweet 

 (A. coronata, DC.). Plant 2-3 M ft.: radical Ivs. petiolate, cor- 

 date, toothed; upper Ivs. acutish at base, serrate, crowded: fls. 

 pale blue, racemose, small. May. Siberia. A. periplocsef&lia, 

 DC. A dwarf (3 in.) perennial suitable for rockeries, with as- 

 cending st. : Ivs. petiolate, ovate, acute at the apex, slightly cor- 

 date at the base, crenately serrate: fls. usually solitary and sea- 

 pose, pale blue. June. Siberia. A. atyldsa, Fisch. 1-2 ft., erect: 

 Ivs. petiolate, the lower obovate and sinuate, the upper ovate, 

 acuminate, quite glabrous: fls. few, racemose, the raceme naked, 

 and lax. May. E. Eu. A. terticillita, Fisch. 2-3 ft.: st. simple: 

 Ivs. whorled, serrate, the upper ovate-lanceolate, the lower petio- 

 late, sub-orbicular: fls. pale blue, small, arranged in irregular clus- 

 ters near the top of the St., some, along the lower part of the St., 

 in whorls. June. Dahuria. jn- TAYLOR t 



ADENOSTOMA (aden, gland, stoma, mouth; calyx 

 with five glands at the mouth). Rosacese. Ornamental 

 woody plants, cultivated chiefly for their handsome 

 white flowers. 



Evergreen, somewhat resinous shrubs, rarely small 

 trees: Ivs. linear, small: fls. white, about 1-5 in. broad, 

 in terminal panicles; calyx-tube obconical, with 5 short 

 teeth and 5 glands at the mouth; petals 5, stamens 

 10-15; pistil 1, with the lateral style strongly curved 

 above the base: fr. a small achene, inclosed in the 

 persistent calyx-tube. Two species in Calif. 



The adenostomas are heath-like evergreen shrubs; 

 very handsome when in full bloom. They may be cult. 

 in temperate regions in a sunny position and well- 

 drained soil. A . fasciculatum stands many degrees of 

 frost. Prop, is by seeds and greenwood cuttings in 

 spring. 



fasciculatum, Hook. & Arn. Shrub, 2-20 ft.: Ivs. fas- 

 ciculate, linear, about J^in. long: panicles rather dense, 

 2-4 in. long; fls. nearly sessile. May, June. Ranges 

 northward to Sierra Co. The characteristic shrub of 

 the chaparral or chamisal regions of the coast ranges 

 of Calif. Hooker & Arnott, Bot. Beechey's Voy. 30. 

 Intro. 1891. 



sparsifolium, Torr. Shrub or small tree, 6-12 ft., 

 rarely 30 ft., resinous: lys. alternate: panicles loose; 

 fls. pedicelled, larger, J^in. across, fragrant. S. and 

 Low. Calif. Emory Rep. U. S. and Mex. Bound. 

 Surv. 20. Intro. 1891. ALFRED REHDER. 



ADENOSTYLES (from aden, a gland, and stylus, a 

 style, in allusion to warty glands of the stigmas). Com- 

 pdsitse. A little-known group of hardy perennials, grown 

 for their purplish or whitish flowers, perhaps known in 

 America only in botanic gardens. 



Leaves alternate or radical, usually broad, the petiole 

 frequently dilated into a stipule-like, st.-clasping 

 base; fls. in medium-sized heads, the fls. all tubular, 

 long, exserted; involucre cylindric or bell-shaped, .its 

 bracts small and unequal. There are only 5 species, all 

 natives of Cent. S. Eu. None is of horticultural im- 

 portance. May be grown in the open border. Prop, is 

 by seed and division. 



albifrons, Reichb. A much-branched, hairy peren- 

 nial, 2-3 ft. : Ivs. on the lower surface cottony, bright 

 green above, almost round and deeply cordate; basal 

 Ivs. long-stalked; the stalks eared: heads 15-20-fld., 

 purple, rather attractively paniculate or coo'mbose. 

 Woody mts., S. Eu. July, Aug. 



A. alpina. Bluff. & Fingeruth. A lower, smooth perennial, with 

 the heads 3-6-fld. ; is scarcely known in Amer. It is not so showy as 



N. TAYLOR. 



ADESMIA (not bound; referring to the free stamens). 

 Leguminosx. More than 100 species of tender herbs, 

 shrubs or sub-shrubs from S. Amer., allied to the pea- 

 nut. Lvs. abruptly pinnate, ending in a bristle: fls. 

 axillary, solitary, or sometimes racemose and terminal. 

 Some of them are showy. 



A. balsdmica, Bert. Lvs. 1-1 Yt in. long; Ifts. 10-16 in pairs: 

 racemes 3-8-fld.; fls. Kin. across, golden yellow. Chile. H.M. 

 6921. Has the odor of balsam. A. bvronioides. Hook. A pretty 

 shrub, warted all over, except the petals and Ifts., with large 

 balsamiferous glands: Ivs. 1 K~2 in. long, made up of from 10-13 

 pairs of sessile, orbicular, coarsely crenate, dark green Ifts.: fls. 

 bright orange-yellow, in terminal racemes. Patagonia. B.M. 7748. 

 A. glulindsa. Hook. & Arn. 2 ft., shrubby; the branches clothed 

 with glutinous hairs: Ivs. with 3-4 pairs of hairy elliptic Ifts.: 

 fls. yellow, racemose and terminal. Chile. Neither is in the Amer- 

 ican trade, but both cult, in botanic gardens. fyr TA vinn t 



ADHATODA (native name). Acanthacex. About 

 25 species of tender shrubs, distinguished from Jus- 

 ticia by the less-spurred anthers, and often by the 

 habit and calyx, but considered by de Dalla Torre and 

 Harms as a mere section of that genus. Fls. whitish 

 or purplish; calyx 5-cleft, often exceeded by the bracts; 

 corolla long-tubed, the limb prominently 2-lipped; 

 stamens 2. For culture, see Juslicia. 



cydpniaefdlia, Nees. BRAZILIAN BOWER-PLANT. Lvs. 

 opposite on short petioles, ovate: lower lip broadly 

 obovate, purple. Brazil. B.M. 4962. F.S. 12:1222. 

 R.H. 1873:110 Cult, in Calif. 



A. VAsica, Nees. Lvs. ovate-lanceolate, acuminate: fls. white, 

 streaked red or purple. Ceylon. B.M. 861 (as Justicia Adhatoda}. 



N. TAYLOR.f 



ADIANTOPSIS (Greek, like Adiantum). Polypodia- 

 cex. Like Adiantum, but differing in haying the sori 

 simple, one to each veinlct and not occupying the ends 

 of several veinlets, as in Adiantum. A small genus, 

 little known in cult. 



pedata, Moore (Cheilanthes pcdata, R. Br.). Lvs. 

 cespitose, on long (912 in.) sts., about 6 in. either 

 way, the 3 divisions bipinnatifid; sori numerous, 

 placed on both sides of the segm. Jamaica, Cuba. 



R. C. BENEDICT. 



ADIANTUM (Greek, unwelted). Polypodiacex. 

 MAIDENHAIR FERN. A large, widely distributed genus 

 of ferns, mainly of tropical countries, some of them 

 popular greenhouse and conservatory plants. 



The leaves have usually polished black or purplish 

 stalks, the blades thin and delicate, simple or divided 

 into usually fan-shaped segments, with the outer mar- 

 gins revolutc, covering linear sori. Of the one hundred 

 or more species, only one, A. pedatum, occurs, commonly 

 in temperate North America. A few others are found in 

 the southwestern states and in Florida. A. cuneatum 

 is the most frequently cultivated of the exotic species. 



The genus Adiantum furnishes some of the most 

 useful and popular species of commercial ferns. They 

 are easy of cult. They need a slightly shaded posi- 

 tion, moderately moist atmosphere, and a temp, of 60- 



