1224 



PAULO WNIA 



cut back to the ground every spring, the young shoots 

 should be removed, except one or very few on each 

 plant; during the first years of this treatment they will 

 grow more vigorous every year, but afterwards they 

 will decrease in size, weakened by the continuous cut- 

 ting back ; they should then be replaced by strong young 



1654. Paulownia imperlalis. 

 To show the verdurous growth of the youug shoots. 



plants. Where the fl.-buds which are formed the pre- 

 vious year are not killed by frost the Paulownia is one 

 of the most conspicuoiis tlowering trees in spring, and 

 in summer the foliage, though it is of somewhat dull 

 color, attracts attention by the size of the Ivs. In tem- 

 perate climates it is sometimes used as an avenue tree. 

 It thrives best in a light deep loam, and in a sheltered 

 position. Prop, by seeds sown in spring or by root- 

 cuttings, and by greenwood cuttings under glass ; it 

 may be grown also from leaf -cuttings; the young unfold- 

 ing Ivs. when about 1 in. long are cut off close to the 

 stems and inserted in sand under a hand-glass in the 

 propagating house. Two species in China and Japan; a 

 third one with evergreen foliage Is reported by Dr. 

 Henry from South China and pronounced one of the 

 most magnificent flowering trees. Trees with stout 

 spreading branches: fls. in terminal panicles; calyx 

 campanulate, 5-lobed; corolla with long, slightly curved 

 tube, and spreading, oblique 5-lobed limb; stamens 4: 

 fr. a 2-celled capsule, loculicidally dehiscent, with nu- 

 merous small winged seeds. 



imperi&lis, Sieb. & Zucc. {P. tomentd.ia , Steud.). Fig. 

 10,34. Tree, to 40 ft., with stout spreading branches 

 forming a round head : Ivs. rather long-petioled, broadly 

 cordate -ovate, entire or sometimes 3-lobed, acuminate, 

 pubescent above, tomentose beneath, 5-8 in. long or on 

 vigorous shoots even larger; panicles to 10 in Ii 

 fragrant, pale violet, lH-2 in. long; pedicels and calyx 

 densely rusty tomentose: capsule woody, broadly ovoid, 

 pointed, 1 in. or somewhat longer. April, May China, 

 Japan. S.Z. 1:10. B.M. 4666. P.M. 

 10:7. Gn.34,p.79; 54, p. 476. Mn. 7, 

 p. 171. It is sometimes escaped from 

 cult, in the S. States. 



Alfred Rehder. 



Paulownia imperialis in southern 

 California reaches a height of 40 ft. 

 in 25 years, with a spread nearly as 

 great. When in full leaf it makes 

 a dense shade. It starts to bloom 

 before the leaves come and all is 

 over before the tree is in full leaf. 

 For this reason it is not a favorite. 

 The Jacaranda is a prettier blue, 



PAVONIA 



more floriferous, lasts three times as long, the blooms con- 

 tinuing until the tree is in full leaf. It is out of leaf not 

 more than half as long as Paulownia is. It makes as 

 dense shade as the Paulownia, has a prettier leaf and is 

 more desirable in every way. The growth of the two 

 trees is about the same at the end of a quarter century. 

 The habit of the Paulownia in retaining dry seed-pods 

 on dead limbs 3 or 4 ft. long is very unpleasing, and 

 necessitates a thorough cleaning each year to the tip 

 end of the uppermost branch — often a hard work to ac- 

 complish. Ernest Braunton. 



PAVfiTTA (Malabar name of P. IiuUca). BuUAcece. 

 About 60 species of tropical shrubs and small trees 

 closely allied to the brilliant Ixoras but far less showj', 

 the fls. smaller, and the clusters looser; also they have 

 a much more conspicuous style, which is often thrust 

 out of the flower an inch or so. The fls. are white or 

 greenish, salver-shaped, 4-lobed (rarely 5-lobed), and 

 borne in trichotomous corymbs, containing as many as 

 30 fls., which at best may be 1 in. long and % in. across. 

 Pavettas generally have membranaceous Ivs., while 

 those of Isora are leathery. In Pavetta the style is 

 longer and spindle-shaped at the top; in Ixora the style 

 generally has 2 short branches at the top. Other generic 

 characters of Pavetta are: calyx-lobes short or long: 

 stamens 4 or 5, barely exerted: disk tumid, fleshy: 

 ovary 2-locular: drupe 2-stoned. 



A. Foliage variegated. 



Borbdnica, Hort. Foliage plant with unknown fls. Its 

 position in this genus is a mere guess. Lvs. about 9 in. 

 long, oblong-acuminate, rounded at the base, with a 

 salmon-red midrib, mottled with light green on a dark 

 green ground. Bourbon Island. Lowe 5. 

 AA. Foliage not variegated. 



Natal^nsis, Sond. Lvs. lanceolate-acuminate, petio- 

 late, glabrous : calyx-teeth bristle-shaped, thrice as long 

 as the calyx-tube: fls. white. Natal. 



P. Cdffra. Haw. & Sond. Lvs. obovate, almost sessile, gla- 

 brous; oalys- teeth twice as long as the tube: lis. white. S. Afr. 

 B.M. 3580.— P. Indica, Linn. Glabrous to tomentose: lvs. 

 vjtrying greatly in shape; calyx-teeth much shorter than the 

 tube: fls. white. India. B.E. 3:198. -vp. ji_ 



PAVIA. Included with jEsculus. 



PAV6NIA (J. Pavon, joint author of Ruiz and Pavon's 

 Flora Peruviana et Chilensis; died 1844). Malvdcece. 

 About 60 species of tropical herbs or shrubs, tomentose, 

 hispid or glabrescent: lvs. often angled or lobed : fls. of 

 various colors, peduncled or crowded into a sort of head 

 at the tips of the branches: bractlets 5-many, distinct 

 or more or less connate; calyx 5-cut or 5-toothed; pet- 

 als spreading or con volute-conni vent: staminal column 

 truncate below the apex or 5-dentate: ovary 5-loculed, 

 1-ovuled. 



Perhaps the most desirable species is P. multiflora, 

 known to gardeners as P. Wioti. This has many showy 



