AZALEA 



AZOLLA 



123 



to New York. There are some forms and crosses of 

 this variety, of which the following may be recom- 

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

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

 11; 14; Princess Maud, rosy magenta, B.H. 1886: 516; 

 Mrs. Carmichael, crimson-magenta ; Princess Bea- 

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

 Buist, pure white. 



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

 fdlia, Hook. A. Hliiflora, Poit.). Much branched, low 

 shrub, 1-3 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. Alba, Eehder (A. Indica, Y&r. dlba, 

 Lindl. -B. lenodnthum, Bunge). Fls. white, sometimes 

 striped pink. Var. purpurea, Rehder (B. ledifdlium, 

 var.pHj'ptYrfjtm, Max.). Pis. rosypurple. Var. naroissi- 

 fldra, Rehder (A. narcissiflora, Port.). Pis. double, 

 white; rarelypurple. Var. punlcea, Rehd. (A.punicea, 

 Sweet. A. ledifdlia, v&r. phwnicea, Hook. A. Itidiea, 

 var. calyclna, Paxt.). Fls. single, purple; calyx with 

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

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

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

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

 dron piilchrum. 



AA. JFls. from lateral 1-fld. buds toward the end of the 

 branches : corolla rotate campanulate, glabrous. 

 (Azaleastrum.) 



16. albiUdra, O. Ktze. (Rhododendron albiflirum. 

 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 ; calyx glandular ; stamens 10. Rocky 

 Mts. B.M. 3670. 



A. DahArica, Koch == Rhododendron DaMvaicmn. — A. di- 

 anthiflbra, Carr.^A. rosmarinifolia, var. dianthillora. — A. dila- 

 «d(a, O. Ktze. (R. dilatatum, Micj.). Allied to A. rhombica. Lvs. 

 glabrous : stamens 5. Japan.— A. Farrerce, Koch (A. squa- 

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

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

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

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

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

 peduncled, 1/^-2 in. broad, campanulate, purple. N. E. Asia, 

 N. W. Amer. Gt. 36:1260.— A. Lappdnica, Linn.= R. Lapponi- 

 cum.— A. Unearifblia, Hook. (R. UnearifoUum, Sieb. & Zucc.). 

 Allied to A. rosmarinifolia. Lvs. Unear-laneeolate : corolla 

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

 May. Japan. B.M. 5769.— A.mocrosJpoia, 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, Gt.l9: 662.— A. mucronata, Blum6=A. rosmarinifolia.— 



A. ohtils<t, Llndl.=A. Indica. var. obtusa.— A. ovhta, Lindl. (R. 

 ovatum. Planch.). Alhed to A. albiflora. Height 2-12 ft. : lvs. 

 ovate, glabrous: fls. pink ornearly white, spotted, rotate, 1J4~1% 

 in. broad; stamens 5. China. B. M. 5064.— A. re«icHZd(a, Kocli 

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

 Maxim.). Allied to A. albiflora, Lvs. elliptic, creuately cili'ite, 

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

 broad. Japan. Gt. 19: 666.—^. serpyllifblia, Gr.ay (R. serpylli- 

 foUum, Miq.), Allied to A. Indica. Low, rigid shrub : lvs. de- 

 ciduous, obovate, ^-^\n. long : fls. single, rosy red, ^-%\u. 

 broad. Japan. B.M. 7503.— .i. Siebotdi, Miq. =A. Indica. — A. 

 SQuamdta, Lindl. ^A. Farrerse.- A. Tschondskii, O. Kuntze (R. 

 Tschonoskii, Maxim.). Allied to A. Indica. Low shrub : lvs. 

 elliptic, /4-54in. long: fls. 2-4, white, /^in. broad. Japan. 



Alfred Rehder. 



AZABA (I. N. Azara, a Spanish promoter of science, 

 especially of botany ) . JBixacece. Shrubs or small trees : 

 lvs. evergreen, alternate, with usually enlarged and leaf- 

 like stipules : fls. small, in axillary peduncled racemes 

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

 rarely 5 : fr. a many-seeded bt^rry. About 20 species 

 in S. America, especially Chile. Handsome evergreen 

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

 regions ; probably only A. microphylla will thrive far- 

 thor north in a sheltered position and protected 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. 



microphylla. Hook. f. Prom 3-12 ft. : lvs. obovate, ser- 

 rate, or nearly entire, %-%m. long, shining, glabrous, 

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

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

 Chile. G.C. 11. 1:81. — Graceful evergreen shrub, regu- 

 larly pinnately branched, excellent for covering walls ; 

 the hardiest of all the cultivated species. 



Gilllesi, 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. 

 F.S. 23: 2445. — The handsomest of all Azaras. 



A.crassifblia, Hort. = A. Gilliesi. — A. dentdta, R. & Piiv. 

 Heightl2ft.: lvs. obovate or elliptic, erenate-serrate: lis. yellow, 

 in small corymbs. Chile. B.R. 21:1788.— A. integrifblia. E. & 

 Pav. Height 10-20 ft.: lvs. entire: fls. yellow, in oblong heads. 

 ChUe. Has a variegated form. Alfked Rehder. 



AZ6LLA (Greek, (0 destroy by drying). Salvinidcece. 

 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 Mex. 



filiculoldes. Lam. Plants 1-2 in. long : anchor-like 

 processes without septa. Calif, to Chile. 



L. M. Underwood. 



