DAVALLIA 



Moore. More robust: Ivs. not so fine, lighter color 

 than the species. 



11. dissecta, J. Smith. Rootstock stout, with dense, 

 rusty scales: Ivs. 10-12 in. broad, on straw-colored 

 stalks; segms. oblong, cuneate at base, with simple or 

 bifid lobes; sori minute, often with 2 projecting horns. 

 Java. Var. elegans, Hort. Similar to type but with 

 more graceful habit. 



BBS. Length of Ivs. 2-3 ft. 



12. divaricata, Blume (D. polydntha, Hook.). Root- 

 stock with linear rusty scales: Ivs. tri-pinnatifid, some- 

 times 2 ft. broad, with deltoid segms. cut into linear- 

 oblong lobes; sori at some distance from the edge. 

 India to Java and Hong Kong. 



13. pallida, Mett. (D. Mooreana, Mast.). Root- 

 stock stout, with lanceolate dark brown scales: Ivs. 

 with straw-colored stalks 12-18 in. long, quadri-pin- 

 natifid, with deltoid, stalked segms., the ulti- 

 mate obovate-cuneate, bearing the sorus on 



the upper side at the base. Aneityum and 

 Borneo. A.F. 6:901; 9:231. A. G. 13:143. 



For D. concinna and D.f&niculacea, see Loxoscaphe. 

 D. platyphylla, see Microlepia; D. stricta, see Steno- 

 loma; D. tenuifolia, see Stenoloma; D. Tyermannii, see 

 Humata. 



Several other ferns are in trade under the name 

 Davallia, which are properly referred to other genera. 

 Of these, disposition should be made as follows: D. 

 alpina= Humata repens; D. angustata=Huma,ta hetero- 

 phylla; D. 6rasi7iensi's=Saccoloma inaequale; D. retusa 

 =Odontosoria retusa; D. femii/oHa=Odontosoria chi- 

 nensis. D. amcena and D. decora are names of uncertain 

 etanding and application. R c BENEDICT ^ 



DAVIDIA (after Armand David, French 

 missionary, botanized in China from 1862 

 to 1873). Nyssacese. Ornamental deciduous 

 trees, cultivated for their handsome foliage 

 and the large and showy white flowers. 



Leaves alternate, slender-petioled, dentate, 

 without stipules: fls. polygamous, in dense 

 subglobose heads consisting of numerous 

 staminate fls. and 1 bisexual fl., with 2 large 

 bracts at the base; sepals and petals wanting; 

 stamens 1-7, with slender filaments; ovary 

 6-10-celled, with rudimentary perianth and 

 a circle of short stamens on top of the ovary 

 at the base of the short and thick style, with spreading 

 stigmas: fr. a drupe with a 3-5-seeded stone. One 

 species in W. China. 



This is a handsome tree of pyramidal habit, with 

 rather large and attractive bright green foliage, and an 

 object of striking beauty when studded with the very 

 large creamy white floral bracts. The tree has proved 

 hardy in favorable positions as far north as Massachu- 

 setts ; it seems to be somewhat tender only while young. 

 Apparently it grows well in any good fresh soil. Propa- 

 gation is by seeds sown in spring, which soon germi- 

 nate, and by cuttings in summer of half-ripened wood 

 under glass; also by layers. 



involucrata, Baill. Pyramidal tree, to 60 ft., with 

 upright or ascending branches: Ivs. cordate-ovate, 

 acuminate, coarsely serrate, strongly veined, bright 

 green and finally glabrous above, densely silky pubes- 

 cent below, 2 }4-5 m - long: heads terminal, peduncled; 

 bracts 2, opposite, rarely 3, ovate to oblong -obovate, 

 entire or serrate, creamy white, of unequal size, the 

 larger to 7 in. long and to 4J^in. broad: drupe oblong- 

 ovoid, brownish, punctulate, about \ l /2 in. long. May, 

 June: fr. in Oct. W. China. Var. Vilmoriniana, 

 Hemsl. (D. Vilmoriniana, Dode. D. lasta, Dode). Lvs. 

 glabrous and glaucescent below, or only sparingly 

 pubescent while young. B.M. 8432. H.I. 20:1961. 

 G.C. III. 33:235; 39:346. J.H.S. 1903:57; 37:129, 

 fig. 113. R.H. 1906, pp. 297-9; 1907, p. 321. R.B. 

 34:230. This variety is better known in cult, than the 

 type. It was intro. in 1897 by Farges who sent seeds 



DEBREGEASIA 



973 



from which a single plant was raised by Vilmorin. 

 Later E. H. Wilson sent seeds of the variety as well as 

 the type, from which a large stock of plants was raised 

 bv Veitch ' ALFRED REHDER. 



DAY FLOWER: Commelina. 



DAY LILY: Funkia and II emerocallis. 



DEAD NETTLE: Lamium. 



DEBREGEASIA (derivation un- 

 known; probably named after a per- 

 son). Syn., Morocdrpus. Urticdceae. 

 Upright shrubs, grown for then- hand- 

 some foliage and ornamental yellow or 

 red fruits, which are edible. 



Leaves alternate, short- 

 petioled, serrulate, 3-nerved at 

 the base, rugose above, tomen- 

 tose beneath; stipules bifid: fls. 

 monoecious or dioscious in uni- 

 sexual globose clusters arranged 

 in small axillary cymes; stami- 

 nate fls. with usually 4-parted 

 perianth, with 4 short stamens; 

 pistillate with 

 urceolate or obo- 

 vate perianth much 

 contracted at the 

 mouth, with very 

 short usually 4- 

 toothed limb, ad- 

 nate to the ovary; 

 stigma penicillate, 

 on a short style or 

 sessile: fr. subglo- 

 bose consisting of 

 numerous small 1- 

 seeded fleshy drupe- 

 lets. Five or 6 

 species in China, S. 

 Asia and Abyssinia. 

 The two species in 

 cultivation, neither 

 of which is yet in 

 trade, are spreading 

 tender shrubs with 

 handsome slender 

 foliage, dark green 

 above, whitish be- 

 low, and small usually orange-red fruits resembling in 

 shape a small mulberry and produced profusely along 

 last year's branches. D. longifolia is a stove-plant; D. 

 edulis is hardier, and at the Arnold Arboretum sur- 

 vives the winter outdoors. It is, however, killed back 

 nearly to the ground, but sends up numerous shoots, 

 and although it does not flower and fruit, it is an attrac- 

 tive bush on account of the striking contrast of the 

 dark green lustrous upper and the white lower surface 

 of the leaves. Propagation is by seeds and by green- 

 wood cuttings under glass. 



edulis, Wedd. (Morocdrpus edulis, Sieb. & Zucc.). 

 Shrub, to 6 ft.: branchlets appressed-pubescent, soon 

 glabrous: Ivs. oblong-lanceolate to elliptic, acuminate, 

 serrulate, rugose and smooth above, whitish tomentose 

 below, 3-5 in. long: fr. orange-red, globose, about 

 J^in. across, in small dichotomous cymes in June. 

 China, Japan. 



longifdlia, Wedd. (D. velutina, Gaud. Conoctphalus 

 niveus, Wight). Shrub, to 8 ft.: branchlets villous: Ivs. 

 lanceolate to oblong-lanceolate, acuminate, serrulate, 

 rugose and rough above, white-tomentose beneath, 

 4-7 in. long: fr. orange-yellow or red, J^in. across, iu 

 small dichotomous cymes. Subtropical Himalaya to 

 Java. R.H. 1896, p. 321. G.C. III. 39:232, suppl. 



ALFRED REHDER. 



1230. Davallia 

 bullata. 

 (XHJ 



