AZALEA 



to New York. There are some forms and crosses of 

 this variety, of which the following may be recom- 

 mended : Caldwelli. with larger purple tis., Geert, 

 Ic.Az. 18 ; Marvel, lilac-carmine, double. Flor. Mag. 

 II; 14: PrincessMaud. rosy magenta, R.H. 1886:516; 

 Mrs. Carmichael, crimson-magenta ; Princess Bea- 

 trice, bright raauve ; Prime Minister, soft pink ; Miss 

 Buist, pure white. 



15. rosmarinifdlia, Burm. (A. dlba. Sweet. A. ledi- 

 folia. Hook. A. lUllflbra, Poit.)- Much branched, low 

 shrub, I-;{ft.; branches, Ivs. and pedicels densely ru- 

 fously appressed-strigose : Ivs. elliptic or elliptic-lan- 

 ceolate, persistent, 1-3 in. long : fls. 1-3 ; calyx with 

 lanceolate serrate-glandular lobes ; corolla pure white 

 or rosy purple, 2-3 in. broad, fragrant ; stamens usually 

 10. May. China. B.R. 10:811. B.M. 2901. L. B.C. 13: 

 1253. — Some remarkable varieties of this species are 

 the following : Var. dlba, Rehder (A. Indira, var. alba, 

 Lindl. H. Iruciinthum , Bunge). Fls. white, sometimes 

 striped pink. Var. purpurea, Rehder (7?. ledifdlium, 

 var. pttrpidi u»i ,'MsLX.). Fls. rosy purple. Var. narcissi- 

 fldra, Rehder (A. narciiisif/i)ra. Fort.). Fls. double, 

 white; rarely purple. Var. punicea, Rehd. {A.punicea, 

 Sweet. A. ledifdUa, var. pJuvnicea, Hook. A. Jndica^ 

 var. vali/c)na, Paxt.). Fls. single, purple; calyx with 

 linear, not serrate and less glandular lobes. B.M. 3239. 

 li.B.C. 18:1735. A. rosmarinifdlia has produced, with 

 A. Indira, a large number of beautiful hybrids, of 

 which one of the first was figured in 1833 as Rhododen- 

 dron puh'hram. 



AA. Flu. from lateral i-fld. buds toward the end of the 

 branches: corolla rotate campanulate, glabrous. 

 (Azaleastrum.) 



16. albifldra, O. Ktze. {Rhododendron albiflbrum. 

 Hook. ) . About 2-3 ft. : branches strigose and glandular 

 when young : Ivs. oblong, pale green, appressed-stri- 

 gose above and at the midrib beneath, slightly ciliate : 

 fls. nodding, on short pedicels ; corolla white, 5-cleft, 

 about 1 in broad; calvx glandular ; stamens 10. Rocky 

 Mts. B.M. 3670. 



.4. Dahurica. Koch = Rhododendron Dahuricum. — J., di- 

 anthiflbra, (';irr.=A. rosmarinifolia. vjir. dianthitlora.— J., dtla- 

 Idta, O. Ktze. (R. dilatatum. Miq.). Allied to A. rhombica. Lvs. 

 glabrous : stamens 5. Japan.— A. Fdrrerce, Koch {A. squa- 

 mata, Lindl.). Allied to A. Schlippenbachi. Lvs. rhomboid- 

 ovate, somewhat coriaceous: fls. whitish pink, spotted. China. 

 B.R. 33: 3.— A, Japdnica, Gray=A. Sinensis.— A. Kamschdtica, 

 O. Ktze. (Rhododendron Kamsehatieiim, Pall.). Low or pros- 

 trate shrub, to 10 in. high : lvs. obovate, setose : fls. 1-5, long- 

 peduncled, l%-2 in. broad, campanulate, purple. N. E. Asia, 

 N. W. Amer. Gt. 36:1260.— A. Lapp6nica, Linn.= R. Lappoui- 

 cum.- A. Unearifdlia. Hook. (R. linearifolium. Sieb. & Zucc). 

 Allied to A. rosmarinifolia. Lvs. linear-lanceolate : corolla 

 pink, deeply divided into 5 linear-lanceolate segments. April, 

 May. Japan. B.M. 5769.— A. ^Hacros^paZa, O.Kuntze (R. macro- 

 sepalum, Maxim.). Height 1-2 ft.; branchlets densely villose : 

 lvs. deciduous or semi-persistent, elliptic : fls. umbellate, rose- 

 lilac, spotted, about 2 in. broad ; calyx pubescent-glandular. 

 Japan, tit. 19: 662.— A. mucrondta, Blume^A. rosmarinifolia.— 



AZOLLA 



123 



A. obtrlsat Lindl. =A. Indiea, var. obtusa.— A. ovdta, Lindl. (R. 

 ovatum, Plauch.). Allied to A. albiHora. Height 2-12 ft. : Ivs. 

 ovate, glabrous : fls. pink or nearly white, spotted, rotate, 1M-I?i 

 in. broad: stamens 5. China. ii.M,5iim.— A. reticiddta, Koch 

 =A. rhombica.— A. semibarbata, O. Kuntze (R. semibarbatum, 

 Maxim.). Allied to A. albitlora, Lvs. elliptic, crenately cili-ite, 

 setose beneath : fls. greenish yellow, spotted purple, ^a-^in. 

 broad. Japan. Gt. 19: 666. — .-1. serpiiUifdlia, Gr.-iy (R. serpylli- 

 folium, Miq.). Allied to A. In.lic:i. Low, rigid shrub ; lvs. de- 

 ciduous, obovate, ^'%m. lout,': lis, sint,'l.^ rosy red, '.,--*4in. 

 broad. Japan. B.M. 75U3.-.I , ,s'iV/.../i/(, Jliii, A Incliili— ,1. 

 aquam^ta, Lindl. =A. Farrer;i'. — .1 . Isrhi'mifikii < >. Kuul/.e ( R 

 Tsehonosiii, Maxim.). Allied l.> A. ludica. Low shrub : Ivs. 

 elliptic, ii-'4in. long: tis. 2-4. white, tiin. broad. Japan. 



Alfred Rehdek. 



AZARA (L N. Azara, a S|i:iuish pnjiuoter of si-i.-iu-e, 

 especially of botany I. tiLn'iirii. Shrubs <ir small trros : 

 lvs. evergreen, alteViKite, witli iisn;[||y i-iilar^'.-il iuid leaf- 

 like stipules : Hs. small, in a.\illary peduncled racenie.s 

 or clusters, apetalous ; sepals 4-5 ; stamens numerous, 

 rarely 5 : fr. a many-seeded berry. About 20 species 

 in S. America, especially Chile. Handsome evergreen 

 shrubs, with small but fragrant lis., for warm temperate 

 regions; probably only yl . i,iifi-i>iiliiillii will thrive far- 

 ther north in a sheltered positi<.n and iirotected during 

 the winter. Grow best in a sandy compost of loam and 

 leaf soil. Prop, by seeds or cuttings of mature wood 

 in autumn, placed in slight bottom heat under glass. 



miorophylla, Hook. t. Prom 3-12 ft.: Ivs. obovate, ser- 

 rate, or nearly entire, K-Kin. long, shining, glabrous, 

 the stipules similar, but half the size : fis. greenish, in 

 few-fld. clusters; stamens ,5: berries orange. Feb., Mar. 

 Chile. G.C. IL 1: 81. — Graceful evergreen shrub, regu- 

 larly pinnately branched, excellent for covering walls ; 

 the hardiest of all the cultivated species. 



Gilliesi, Hook. & Am. Height 10-15 ft, : lvs. 2K-3 in. 

 long, broad-ovate, with coarse, spiny teeth, glabrous ; 

 stipules orbicular, much smaller : fls. in dense, elliptic, 

 nodding heads, yellow. Feb., Mar. Chile. B.M. 5178. 

 P.S. 23: 2445. -The handsomest of all Azaras. 



A.crassifdiia. Hort. = A. Gilliesi. — J. dentata, R. & Pav. 

 Height 12 ft.: lvs. obovate or elliptic, crenate-serrate: fls. yellow, 

 in sm.all corymbs. Chile. B.R. 21:mS.— A. intesfrifdlia. R. & 

 Pav. Height 1(H20 ft.: lvs. entire: Hs. yellow, in oblong heads. 

 Chile. Has a variegated form. , ^^ 



Alfred Rehder. 



AZ6LLA (Greek, ^o destroy bi/ dnjinij). Salvinidcetf. 

 A small genus of floating aquatics with small, pinnate 

 stems and minute fleshy 2-lobed lvs., producing two 

 sorts of spores in globular sporocarps. The species mul- 

 tiply rapidly by self-division, but will grow readily in 

 water containing a little nutriment. The species are 

 distinguishable only by microscropic examination. 



Caroliniina, Willd. Plant %-l in. long : anchor-like 

 processes of spores with septa. N. Y. to the Gulf of Jlex. 



filiouloldes, Lara. Plants 1-2 in. long : anchor-like 

 processes without septa. Calif, to Chile. 



L. M. Underwood. 



