DODECATHEON 



3-5 in. long: fls. often few in the umbel, sometimes many, 

 half the size of those of D. Meadia , usually deep purple : 

 filaments long, united into a slender tube ; column of 

 blunt anthers relatively short. Exclusively of the Rocky 

 mountain region and subalpine. 



alpinum, Greene. Smaller than the last, but with fls. 

 twice as large and always with parts in 4's; filaments 

 very short, wholly disconnected : Ivs. narrowly ob- 

 lanceolate or almost linear: corolla of a rich, dark pur- 

 ple. Peculiar to the high Sierra Nevada and Cascades. 



J6ffreyi, Moore. Lvs. oblanceolate, erect, entire, mu- 

 cronate, 5-10 in. long: scape 1-1% ft. high: fls. 4-merous ; 

 pedicels and calyx hairy and glandular : segments of 

 the large corolla dark purple; stamens disconnected, 

 dark purple : capsule not exceeding the calyx. High 

 Sierra Nevada and Cascades. 



CC. C(i)>*ul<' r!r<-t<i*<-;xile at top, this part falling off 

 as a lid. Califomian lowland, winter-blooming 

 species, with broad, depressed Ivs. except in*D. 

 CleveUtndi. 



Henderson!, Gray. Lvs. obovoid, very obtuse, entire, 

 depressed, thick and glossy: scapes 8-12 in. high: seg- 

 ments of corolla rose-purple, the base dark maroon en- 

 circled by a band of yellow : capsule oblong, twice the 

 length of the calyx. Calif, to Brit. Columbia. 



cruciatum, Greene. Foliage as in the last : scapes 

 taller, more slender, few-fld. ; parts of fl. in 4's; corolla 

 of a darker purple ; anthers more elongated ; capsule 

 longer. Coast Range of Calif. 



patulum, Greene. Lvs. as in the foregoing, nearly, 

 but stout scapes only 3-7 in. high : umbel very many- 

 fid. : corolla large, with pale cream-colored segments, 

 sometimes purplish tinged : tube of a dark, velvety ma- 

 roon-purple : anthers very short and broad, of a deep 

 blue-purple : capsule subglobose, hardly surpassing the 

 calyx. Plains of the interior of middle Calif. 



These three species have, among other peculiarities, 

 that of propagating by their roots. Each root, after 

 flowering time, thickens and shortens, detaches itself 

 from the ground and forms a bud at the end, thus be- 

 coming a new plant. 



Cleveland!, Greene. Lvs. more elongated, not de- 

 pressed : scape tall and stout; umbel very many-fld.; 

 corolla usually rose-purple, with yellow base and some 

 dark velvety spots next the stamens, these very short 

 and broad, purple. Dry hills of southern Calif. Most 

 beautiful species; winter-blooming like the foregoing, 

 but not propagating by root-metamorphosis. 



AA. Lvs. and scapes from a horizontal rootstock, this 



rooting from beneath. Far northwestern species. 

 dentatum, Hooker. Pale green, white-fld. species, 

 with broad, subcordate Ivs. as in D. cordatum of the 

 southeastern states, but anthers blunt : Ivs. coarsely 

 dentate, but the horizontal rootstock must, as well as 

 the blunt stamens, prevent its being confused with D. 

 cordatum. Washington and Brit. Columbia. Appa- 

 rently rare. 



frigidum, Cham. & Schlecht., is a similarly rhizoma- 

 tous species, but with purple fls. , from the shores of 

 Behring sea. Is not in cult., nor likely to be. 



viviparuin, Greene, is a very large and handsome, 

 purple-fld. species ; subalpine on Mt. Rainier. In the 

 axils of the Ivs., along the thick rootstock, bulblets are 

 produced, by which it propagates. Its capsule opens by 

 a lid, as in many far-western species, g. L. GREENE. 



DODON2EA (from the Greek name of a famous oracle 

 of Jupiter). Sapindacece. About 50 species of trees and 

 shrubs, widely scattered, but especially abundant in 

 Australia. Lvs. alternate, without stipules, simple or 

 abruptly pinnate, inconspicuous, solitary, or in racemes, 

 corymbs or panicles. Reasoner Bros., Oneco, Fla., in- 

 troduced D. remotiflora and D. divia, Switch Sorrel, from 

 Australia, in 1889. These names are not found in Index 

 Kevvensis. 



DOGBANE is Apocynum. 



DOG'S-TAIL GEASS. Eleusine Indica. 



DOMBEYA 499 



DOGTOOTH VIOLET. See Erythronium. 

 DOGWOOD. Cornus, especially Cornus Mat. 



DOLICHOS (old Greek name). Legumindsce. Differs 

 from Phaseolus in technical characters: keel of the co- 

 rolla narrow and bent inwards at a right angle, but not 

 distinctly coiled; style bearded under the stigma, which 

 is terminal; stipules small. Tropical twining beans of 

 perhaps 40-50 species, of which a few forms are in cult, 

 in this country. D. Japonicus, a most worthy orna- 

 mental vine, will be found under Pueraria. For the 

 Velvet or Banana Bean, D. multiflorus, see Mucuna. 

 For D. unguiculatus, see Vigna. 



Lablab.Linn. (D.cultrdtus,Thunb. 

 D. purpureus, Lindl.). HYACINTH 

 BEAN. Tall-twining (often reaching 

 10-20 ft.): leaflets broad -ovate, 

 rounded below and cuspidate-pointed 

 at the apex, often crinkly : fls. pur- 

 ple, rather large, 2-4 at the nodes, in 

 a long, erect raceme : pods small 

 (2-3 in. long) and flat, usually 

 smooth, conspicuously tipped with 

 the persistent style ; seed black, 

 small. Tropics. B. M. 896. B R 

 10:830. A. G. 14: 84. - Cult, in this 

 country as an ornamental climbing 

 bean, but in the tropics the seeds 

 are eaten. Annual. It is easily 

 grown in any good garden soil. Like 

 common beans, it will not endure 

 frost. It is very variable. A form 

 with white fls. and seeds is D. albus, 

 Hort. A form of very large growth, 

 also white-fld., is D. Qtganteus, Hort. 

 (Fig. 731). A perennial form (per- 

 haps a distinct species) is D. lig- 

 ndsus, Linn., the Australian Pea 

 B.M. 380. 



sesquipedalis, Linn. ASPARAGUS 

 BEAN. FRENCH YARD-LONG. TAU- 

 KOK. Fig. 194. Long- 

 rambling or twining an- 

 nual plant, with deltoid- 

 ovate or deltoid-oblong 

 blunt - pointed leaflets : 

 fls. rather large, 1-3 in 

 the axils, the peduncles 

 elongating and bearing 

 the pods at their sum- 

 mits : pods compressed 

 or nearly terete, slender 

 and very long(often 2 ft. ) 

 and sometimes curiously 

 twisted; seeds small, ob- 

 long, more or less trun- 

 cate or squared at the 

 ends, usually reddish or 

 dim-colored. S.Amer. 

 Cult, as a vegetable gar- 

 den esculent, the green 

 pods and dry beans being eaten. As easily grown as 

 other beans. L H B 



DOMBEYA (after Joseph Dombey, (1742-1793), 

 French botanist and companion of Ruiz and Pavon in 

 Peru and Chile). Sterculiacece. About 24 species of 

 shrubs or small trees of minor importance from Africa or 

 Madagascar: Ivs. often cordate, palmately nerved: fls. 

 rosy or white, numerous, in loose axillary or terminal 

 cymes or crowded into dense heads; calyx 5-parted, per- 

 sistent ; petals 5 ; stamens 15-20, 5 sterile, the rest 

 shorter: ovary 3- 5-celled. 



Natalensis, Sond. Distinguished by its cordate, acute 

 Ivs. and the narrowly awl-shaped leaflets of the invo- 

 lucre. Lvs. long, petioled, somewhat angular, toothed, 

 with minute stellate pubescence, 5-7-ribbed : umbels 

 4-8-fld. Natal. Cult, in S. Fla. and north under glass. 

 " Very rapid growing, foliage poplar-like : fls. pure white, 

 larsre, sweet-scented ; a very good winter blooming 

 plant. "Franceschi. 



731. Dolichos Lablab (form 

 Biganteus). (X %.) 



