1000 



DIANTHUS 



DIAPENSIA 



limb obovate-cuneate, purple-spotted above, and with 

 a zone at the center, rose-colored beneath; calyx pur- 

 ple, the teeth lanceolate-acuminate. S. E. Eu. Gn. 64, 

 p. 298; 66, p. 54; 70, p. 275. 



BBB. Calyx-bracts leafy and spreading. 



24. glacialis, Haenke. Three to 4 in. high, the 4- 

 angled sts. tufted and 1-2-fld. : Ivs. green, linear-lanceo- 

 late, pointed, those on the st. linear-acute and strict 

 or recurved, 3-nerved: fls. small and odorless, red- 

 purple; the petals toothed, yellowish beneath, con- 

 tiguous; bracts 2-4. Mts. of S. Eu. G.C. II. 21 : 809 

 A pretty species, but diffi- 

 cult to establish. Grown 



among alpine plants. Var. 

 Preynii, Williams (D. 

 Freynii, Vandas). Lvs. 

 rather soft, keeled, the 

 lateral nerves obscure: sts. 

 usually 1-fld. : calyx-teeth 

 ciliate. Var. neglectus, Wil- 

 liams (D. neglectus, Loisel). 

 Lvs. plane: fls. rarely twin; 

 bracts 4: petals separate. 

 G.C. III. 49:415. Gn.76, 

 p. 339. Gn.W. 20:711. .M 



25. chinensis, Linn. (D. ' 

 sinensis, Hort.). 



Fig. 1254. Cespi- 

 tose, glabrous, more 

 or less creeping at 

 base: st. forking, 

 angled and more or 

 less grooved, pubes- 

 cent: Ivs. broad 

 and nearly flat or 

 slightly tr o u g h - 

 shaped, 3-5-nerved : 

 fls. large, solitary or more 

 or less clustered, pink or 

 lilac; the petals (at least in 

 the wild) barbed or hairy 

 toward the base; calyx- 

 bracts 4, in some cult. vars. 

 short. China and Japan; 

 but recent authorities con- 

 sider a European pink to be 

 but a form of it, and thereby 

 extend its range west to 

 Portugal. B.M. 25. The 

 Amoor pink (D. dentosus, 

 Fisch.) is a form known as 

 var. macrosepalus, Franch. : 

 it is a hardy border plant. 

 1 ft. high, with bright red 

 fls. and a spot at base of each 

 petal. Var. asper, Koch (D. 

 Seguieri, Auth.). has fls. in 

 panicles, and the bracts 

 squarrose - spreading : the 



European form of the 1254. Diantbus chinensis. 



species. D. semperflSrens, 



Hort., is a hardy perennial form, 12-18 in., with 

 silvery foliage and deep pink, red-eyed, fragrant fls. 

 D. chinensis has given rise to a beautiful and variable 

 race of garden pinks, var. Heddewigii, Regel (D. 

 Heddewigii, Hort.). These are extensively grown from 

 seeds, and are practically annuals, although plants 

 may survive the winter and give a feeble bloom in the 

 spring in mild climates. The fls. are scarcely odorous. 

 They are single and double, of many vivid colors; and 

 many of the garden forms have bizarre markings. Gt. 

 7:328. G. 2:537. In some forms, var. laciniatus, 

 Regel (D. laciniatus, Hort.), the petals are slashed and 

 cut. G. 2:538. G.Z. 6:1. D. imperialis, Hort., is a 

 name applied to a strain with strong habit and rather 



tall growth, mostly double. C. diadematus, Hort., 

 is another garden strain. G. 2:538. D. cincinnatus, 

 Lem., is a red form with shredded petals. I.H. 11:388. 

 D. hybridus, Hort., is another set. This name (D. 

 hybridus) is also applied to a dentosus-]ike form, which 

 some regard as a hybrid of D. dentosus and some other 

 species. A recent race of the garden pinks, with narrow 

 petals and a star-like effect, is var. stellaris, 

 (D. stellaris, Hort.). For portraits of garden pinks, see 

 B.M. 5536. F.S. 11:1150; 12:1288-9; 13:1380-1. Gn. 

 49 : 82. The garden pinks are of easy cult. Seeds may 

 be sown in the open where the plants are to stand, but 

 better results are obtained, at least in the N., if plants 

 are started in the house. Plants bloom after the first 

 fall frosts. They grow 10-16 in. high, and should be 

 planted 6-8 in. apart. They are very valuable for 

 borders and flower-gardens. Species - names now 

 referred to D. chinensis are D. caucasicus, Sims, D. 

 ibericus, Willd., D. ruthenicus, Roem., D. montanus, 

 Bieb., D. collinus, Waldst. & Kit., representing the 

 European extension of the species. 



26. latifdlius, Hort. Plant 6-12 in. high, of doubtful 

 origin, but in habit intermediate between 

 D. chinensis and D. barbatus. Fls. large, 

 double, in close clusters or even heads, 

 in good colors: Ivs. oblong-lanceolate. 

 A good border plant; perhaps a hybrid. 



D. arbdreus, Linn. 3-4 ft., glabrous and glau- 

 cous, with a woody trunk, linear-acute canalicu- 

 late 3-nerved Ivs., and showy rose-colored 

 fragrant fls. in a dense corymb. S. E. Eu. G.C. 

 III. 43 : 52. This species is one.of the sub-shrubby 

 group of Dianthus, comprising also D. fruticosus, 

 Linn, (of the Grecian Archipelago), D. Bisig- 

 nani, Tenore (of Tunis and Naples), and othe-s. 

 D. suffruticosus, Willd., probably belongs with 

 the last. />. call-alpinus, Hort. Hybrid of D. 

 callizonus and D. ajpinus. G.M. 47, p. 408. 

 D. diutinus, Kit. Allied to D. barbatus: glabrous: 

 sts. simple, 12-18 in., 4-angled: fls. pale red, 6-8 

 together in a head, the petals barbed. Hungary, 

 Servia. Rockery. D. fragrans, Bieb. Cespitose, 

 glabrous: sts. 10-16 in., simple, or branched 

 above: Ivs. elongated-linear, acuminate, 3-5- 

 nerved: fls. fragrant, the limb white suffused 

 with rose, petals beardless. Caucasia, Algeria. 

 D. grdcilis, Sibth. More or less woody at base, 

 glabrous and glaucous, the sts. 14-18 in. and 

 simple and slender: Ivs. linear-acute, strict, 3- 

 nerved: fls. rose, paler beneath, 2-3 in a cluster. 

 Balkans. D. graniticus, Jord. Sts. simple, scab- 

 rous below and glabrous above, slender, 4-angled, 

 6 in.: Ivs. linear-acute, 3-nerved: fls. solitary or 

 in pairs, purple. France. Rockery. D. japoni- 

 cus, Thunb. Glabrous perennial, with simple sts. 

 20 in.: Ivs. ovate-lanceolate, acute, canaliculate, 

 twisted at base: fls. 6-8 in a head, red. Japan, 

 Manchuria. D. microlepis, Boiss. Very dwarf, 

 cespitose, glabrous: Ivs. scale-like: fls. rose-colored 

 (varying to white). Balkans. A marked little 

 alpine. T TJ u 



It, XI. >. 



DIAPENSIA (ancient name of obscure 

 application). Diapensiacese. Two alpine- 

 arctic species, one nearly circumpolar 

 and one Himalayan, the former at least 

 sometimes transferred to alpine gardens 

 and rockeries. Diapensias are very 

 small compact tufted evergreen more 

 or less woody perennials, with small entire 

 coriaceous crowded Ivs.: corolla 5-lobed, bell-shaped; 

 calyx inclosing the caps.; stamens 5, affixed in the 

 corolla, the filaments broad; ovary 3-celled ; fls. solitary 

 on peduncles that project above the dense If.-rosettes 

 (or the peduncle projected, at least in fr.), white or rose- 

 purple. D. lapponica, Linn., on mountain summits in 

 New England and N. Y., and distributed northward to 

 the arctic, forms dense cushion-like tufts, 1 or 2 in. 

 high, with white fls. on peduncles that become 1 or 2 

 in. long; a very interesting alpine, but seldom grown. 

 B.M. 1108. D. himalaica, Hook. f. & Thorn Densely 

 tufted: Ivs. somewhat acute, very short: fls. white or 

 rose-red, subsessile, the corolla-tube twice the length of 

 the calyx. Sikkim, 10,000-14,000 ft. L H B 



