IRIS 



IRIS 



1677 



p. 23. G.W. 12:678. Gn.M. 15:362.— Common in 

 cult. The plants form large, compact clumps, produc- 

 ing many long flowering sts. from the center. Each St. 

 usually has a terminal cluster of 2-.5 fls. and 1 lateral 



head. Var. variegata, 

 Hort., has variegated 

 Iv.s. Var. acfita, Hort. 

 Narrow-lvd. Var. 

 flesniosa, Murray (/. 

 flexuosa, Murray. /. 

 sibirica var. dlha, 

 Hort.). Fls. white 

 with crisped segms. 

 B.M. 1163. 



66. prismatica, 

 Pursh (/. gracilis, 

 Bigel. /. virginica, 

 Muhl.). Plant tall, 

 slender: Ivs. mostly 

 shorter than the St., 

 grass-like: st. 1-2 ft., 

 simple or forked, 

 flexuous : spathes 1-2- 

 fld.: pedicel long, ex- 

 ceeding the spathe: 

 outer segms. 1 J'2~2 in. 

 long; blade shorter 

 than the claw, bright 

 lilac, yellow on the 

 throat, marked with 

 purple and darker 

 veins; inner segms. 

 erect, bright hlao. 

 May, June. Wet 

 grounds. New Bruns. 

 to Pa. and N. C. B. 

 M. 1504. 



67. unguicularis, 

 Poir. (/. stylosa, Desf. 

 /. crelensis, Janka). 

 Fig. 1970. Lvs. about 

 6 in a tuft, finally 

 l>^-2 ft. long, bright 

 green: st. nearly ob- 

 solete : spathes 2-3- 

 fld.; valves 4-6 in. 

 long, scarious at the 

 tip only, shorter than 

 the tube: tube 5-6 in. 

 long, fiUf orm, exserted 

 from the spathe; limb 

 bright hlac, rarely 



white; outer segms. 2^2-3 in. long, 1 in. broad, with a 

 yellow keel, streaked with hlac on a white ground at 

 the throat; inner segms. oblong. Jan., Feb. Algeria, 

 Greece and Islands, Asia Minor and N. Smyrna. B.M. 

 5773; 6343. R.H. 1900:.30O. Gn. 24:68; 46:248; 

 49, p. 236; 50, p. 187. G.C. III. 25:85. F.S.R. 35, 

 p. 131. G. 9:. 590; 34:115. G.L. 19:48; 22:378. Gn. 

 W. 20: 159. — Not hardy, but useful for cutting in early 

 winter. Fragrant. Var. alba, Hort. White form; 

 spring. C.L.A. 5:134. Gn. 68, p. 381. Var. superba, 

 Hort. Bluish purple. Oct. and later. Var. speciosa, 

 Hort. Fls. well above the fohage, deep reddish purple. 



68. bracteata, Wats. Fig. 1971. Rudimentary lvs. 

 brown, very rigid; produced lvs. 1 to few, much ex- 

 ceeding the St., 1-2 ft. long, one side green, the other 

 glaucous, edge revolute: st. 1-headed, angled, 2-3 in. 

 to 1 ft. long, sheathed with bracts 2-4 in. long: tube 

 short, funnelform; outer segms. 2-3 in.; blade ovate, as 

 long as the claw, pale yellow, veined with bluish pur- 

 ple; inner segms. shorter, erect, yellow; style-branches 

 long, narrow. June. Discovered in 1884 by Thomas 

 Howell, in Ore. G.F. 1:43 (adapted in Fig. 1971). 

 G.C.III. 39:401; 52:338. G.M. 50:161.— Intro. 1888. 



1971. Iris bracteata. (X!*) 



69. Sintenisii, Janka (/. graminea var. Sintenisii, 

 Richter. /. Urilmovi, Velenovski). Lvs. narrow, linear, 

 acuminate, 8-18 in. long, }4-Hi'i- broad: st. round, not 

 flattened as in /. graminea, slender and flexuous, 4-12 

 in. long, almost entirely clothed by 2-3 reduced lvs. 

 and bearing a single head of 2 fls.: spathe-valves 

 narrow, linear, acuminate, keeled, the inner longer 

 than the outer: ovary tapering to a long neck taking 

 the place of the perianth-tube: fls. bright hlac, IJ2 in- 

 long; outer segms. with an obovate blade and a shghtly 

 pandurate claw, bluish purple, whitish toward the 

 throat, marked with purple veins and with reddish 

 purple veins on the claw; inner segms. oblanceolate 

 with a cuneate claw deep blue-purple; style-crests 

 lanceolate. S. Italy, Balkan Peninsula, Asia Minor 

 and Turkey. 



70. Douglasiana, Herb. Rhizome stout, short, creep- 

 ing: lvs. about 6 in a tuft, broadest in the middle, 

 strongly ribbed, 1-2 ft. long: st. 1-2 ft. high, usually 

 simple, with 1 long bract-lf.: tube H-Jiin. long: fls. 

 3-4 in. diam.; outer segms. obovate-spatulate, spread- 

 ing and recurved, pale lilac, with a white disk and purple 

 veins; inner segms. shorter, erect, lanceolate, acuminate, 

 pale hlac, veined. Cahf. B.M. 6083. Gn. 50: 272.— 

 E.xists in an endless variety of color-forms, varying 

 from pale hlac to deep violet with considerable varia- 

 tion in the veining. 



71. missouriensis, Nutt. (/. Tolniieana, Herb.). Lvs. 

 pale green, finely ribbed, 1-1 J4 ft. long: st. 1-2 ft. lortg, 

 usually exceeding the lvs., bearing a single large If. low 

 down: pedicel long: tube very short; hmb bright hlac; 

 outer segms. obovate, 1 in. broad, yellow near the 

 claw; inner segms. oblong, emarginate, straight, erect. 

 Wet soil. S. D. and Mont, to Ariz. B.M. 6579. Gn. 

 50:186. — Not common in cult. Flowers early. 



72. fulva, Ker (/. ciiprea, Pursh). Lvs. thin, bright 

 green, 1J4-2 ft. long, not exceeding the st.: st. 2-3 ft. 

 high, forked low down; lower st.-lvs. 1 ft. long: pedicel 

 produced: tube greenish yellow, 1 in. long; limb loosely 

 expanded, bright reddish brown or copper-colored, 

 variegated with blue and green; outer segms. obovate- 

 cuneate, emarginate; inner segms. smaller, spreading. 

 Late June. In swamps. 111. to Ga., La. and Texas. 

 Intro, into England 1811 by Lyon. B.M. 1496. Gn. 

 53:518. Mn. 



5:61. 



73. Pseudac- 

 orus, Linn. (/. 

 acoroides, Spach. 

 /. flava, Tornab.). 

 Lvs. 114-3 ft. long, 

 equaling the st. : 

 st. stout, terete, 

 2-3 ft., bearing 

 several long lvs. 

 and several clus- 

 ters of fls.: limb 

 bright yellow; 

 outer segms. 

 broadly obovate, 

 2-2 3'2 in. long, 

 yellow, with a 

 bright spot and 

 radiating brown 

 veins on the claw; 

 inner segms. 

 scarcely longer 

 than the claw of 

 the outer, oblong. 

 May, June. Eu., 

 Syria and the 

 Barbary states; 

 naturalized in N. 

 Y., Ma.ss. and N. 

 J. — The plants 1972. Iris versicolor (XH). No. 74 



