824 



IRIS 



IBIS 



ccc. stem present, bearing 1-2 



leaves 15. Missouriensis 



16. Douglasiana 

 AA. Lvs. ensiform, generally much 

 over K in. broad. 

 B. Stem hearing several lotuj 

 leaves. 



c. Fls. reddish broivii 17. fulva 



CO. Fls. yellow IS. Pseudacorus 



CCC. Fls. blue, purph, lilac, 

 etc., or white, 

 D. I/fS. somew?iat glau- 

 cous 19. versicolor 



DD. Lvs. bright green, not 

 glaucous. 



E. Fls. sessile 20. hexagona 



EE. Fls. p'edicelled 21. Caroliniana 



22. setosa 

 BB. Stem bearing 2— 4 reduced lvs. 



c. Fls. yellou' 23. Guldenstoedtiana 



24. aurea 

 2.'). Monnieri 

 20. orientalis 

 cc. Fls. some shade of blue or 



white 27. foetidissima 



28. laevigata 



29. Trojana 



30. spuria 



1. htimilis, M. Bieb. (/. J?H//i(!«i>a, Ker.,notDryand. 

 Rhizome wide-creeping : lvs. to 12 in a tuft, glaucous, 6-12 

 in. long: lis. bright lilac; outer sepals with a suborbicu 

 lar lilade and a long cuneate claw. Caucasus to Geor 

 gia and Hungary. Gn. 10, p. 379. 



2. macroslplian, Torr. Plants rather dwarf, 6-12 in 

 high : lvs. grass-like, green, 12 in. long, exceeding the 

 Hs.: stem 3-6 in. long: pedicels very short: outer seg 

 ments obovate-cuneate, undulate, pale yellow to cream 

 with a network of brownish crimson or bright lilac 

 veins ; inner segments rather small, colored like the 

 outer. Pree-flowering. Calif, and Ore. Gn. 52, p. 120.— 

 Torrey says the fls. are bright lilac and the lvs. less 

 than 4 lines wide. 



3. HArtwegii, Baker. Lvs. few (2), 6-12 in. long, finely 

 veined: .'^tem 6 in. long, with linear leaf low down: pedi- 

 cel 1-lH in. long: limb pale yellow: outer segments with 

 an oblong blade, shorter than the claw. Calif. Barely 

 cult. 



4. Grant-DuJfii, Baker. Lvs. about 1 ft. long: stem 6 

 in. hit:h, witli al)uut 2 lvs.. outer valves marked with 

 fine lilack liiifs: outer segments with a yellow blade, 

 much sliorttT than the claw; claw veined with lilac on a 

 yellowish white ground. Palestine. Gt. 42, Supp. PI.— 

 Not valuable commercially. 



5. EuthSnica, Dryand., not Ker. Lvs. 3-12 in. long, 

 in crowded tufts : stem slender, .3-6 in. long, but often 

 obsolete: tube twice as long as the ovary: outer seg- 

 ments with an oblong blade rather shorterthan the claw, 

 lilac, violet scented. Apr., May. China, Siberia and 

 Cent. Asia. B.M. 1123 and 1393. Gn. 50, p. 187. 



6. tSnax, Dougl. Sheaths short: lvs. 6-12 in. long: 

 stem 0-12 in. long: pedicel long: outer segment broadly 

 obovate, with an acute point : blade about as long as 

 the claw, bright lilac, with purple veins and a varie- 

 gated white and yellow spot on the throat: inner seg- 

 ments shorter, waved. Apr., Mav. Dry soils, B. C. and 

 Ore. Int. to Eng. 1820. B.M. 3343. B.R. 15:1218. Gn. 

 53: 1175. -Hardy. 



7. ensata, Thunb. (I. biglumis, Vahl. I.oxypHala, 

 Bunge. /. ^iv)!/raH.s-,Lindl.'). Sheaths large: lvs. 1-3 ft. 

 long : pedicel 2—1 in., often longer than the spathe: 

 limb loose, bright blue or lilac: outer segments oblan- 

 ceolate, 2 in. long: blade shorter than the claw, veined 

 with dark blue, yellowish on the throat: inner segments 

 slender, erect, bright blue. Bussia, Japan, Caucasus. 

 B.M. 2.528 and 2331. B.B. 26:1. Gt. lOll.-Hardy. 

 Variable. 



Var. pabul&ria, Naudin {I. pabtil&ria, Hort.). Said 

 to be distinct. Larger, with lvs. purplish red near the 

 base. Used as a forage plant. Does well in driest 

 situations. Gt. 47:1452. — Described by Wittntack. Gt. 47, 

 p. 369. The seeds should be sown" in beds, and the 



young plants set out the following spring, 10 in. apart 

 each way, where they are to remain. 



8. Delaviyi, Micheli. Lvs. 2-2^ ft. long, often nearly 

 1 in. broad: stem 3-5 ft. high, bifurcate: spathe valves 

 green: outer segments reflexed from the middle, oblong, 

 obtuse or emarginate. brilliant violet, spotted with white 

 on the lower half; claw yellow, veined with lilac; inner 

 segments oblong-lanceolate, acute, erect, violet. Large 

 plants, with the flower-stalks erect, high above the lvs. 

 Thibet. R.H. 1895, p. 399. 



9. longipfetala. Herb. Lvs. 1-1>^ ft. long : stem stout, 

 soliil, coiiiprisseil, l,i.{ ft. high : fls. bright lilac; outer 

 sfguit'iits ul)Ovate. reflexing half way down; claw veined 

 with violet on a white ground. Calit. B.ai. 5298. 



10. prismitica, Pursh (/. Virginica, Muhl. /. graci- 

 lis, Bigel.). Plant tall, slender: lvs. mostly shorter 

 than the stem, grass-like: stem 1-2 ft., simple or forked, 

 flexuous : spathes 1-2-fld. : pedicel long, exceeding the 

 spathe: outer segments lK-2 in. long; blade shorter 

 than the claw, bright lilac, yellow on the throat, marked 

 with purple and darker veins; inner segments erect, 

 bright lilac. May, June. Wet grounds, New Brunswick 

 to Pa. and N. Car. B.M. 1504. 



11. graminea, Linn. (/. ifikithisis, Lange). Lvs 

 stroiii^ly ril'l'cd. I-IH ft. long: stem compressed, an 

 kUmI, slender, solid: pedicel I-IV2 in. long: limb bright 

 lilac, copiously veined; outer segments with an orbicu- 

 lar blade % in. broad and shorter than the broad claw 

 claw dull yellow, veined with purple; inner segments 

 erect, nearly straight. May. Central and S. Eu. B.M 

 681. — Long cult.; mentioned by Lobel, Clusius and Ge 

 rarde. Distinguished from/. Sibiricahy its solid, angu 

 lar stem. 



12. Sibirica, Linn. (/. acuta, Willd.). Compact, 

 tufted: lvs. green, not rigid, 1-2 ft. long: stem slender, 

 terete, fistulose, much overtopping the lvs., simple 

 forked, bearing several clusters of fls.: limb bright li- 

 lac-blue; outer segments lK-2 in. long, with an orbicu- 

 lar blade gradually narrowed to a slender claw, veined 

 with bright violet, whitish toward the claw; inner seg- 

 ments shorter, erect. Central and S. Eu. and eastern 

 Siberia. Int. in 1796. B.M. 50. R.H. 1898, p. 23. -Com 

 mon in cult. The plants form large, compact clumps 

 producing many long flowering stems from the center, 

 Var. orientalis, Thunb. (/. .s«)i</»;»™, Don. /. Sibir 

 ica, var. sanguiuea, Hert. /. ha inatophylla, Fisch 

 /. Sibirica. var. luTmati'ph iil la . Hort.). Fls. larger 

 more fugitive; blade of the outer segments orbicular 

 young lvs. reddish. June. Produces a second cro| 

 later. Var. Alba, Hon., with pure white fls. Var. varie 

 gata, Hort., with variegated lvs. Var. acuta, Hort, 

 Narrow-lvd. 



13. unguicuiaris, Poir. (/. styldsa, Desf.). Fig. 1172. 

 Lvs. about in a tuft, finally lK-2 ft. long, bright 

 green : tube 5-0 in. long, filiform, exserted from the 

 spathe: limb bright lilac, rarely white; outer segments 

 2K-3 in. long, 1 in. broad, with a yellow keel, streaked 

 with lilac on a white ground at the throat ; inner seg- 

 ments oblong. Jan., Feb. Algeria. B.M. 5773. Gn. 

 24:398; 40:979; 49. p. 230; 50, p. 187. G.C. III. 25:85. 

 — Not hardy, but useful for cutting in early winter. 

 Fragr.ant. Var. Alba, Hort. White form; spring. Var. 

 sup^rba. Hort. Bluish purple. Oct. and later. 



14. bracteita, S. Wats. Rudimentary lvs. brown, 

 very rigid; produced lvs. 1 to few, much exceeding the 

 stem, 1-2 ft. long, one side green, the other glaucous, 

 edge revolute : stem 1-headed, angled, 2-3 in. to 1 ft. 

 long, sheathed with bracts 2-4 in. long : tube short, 

 funnelforra : outer segments 2-3 in. ; blade ovate, as 

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

 ple; inner segments shorter, erect, yellow; style branches 

 long, narrow. June. Discovered in 1884 by Thomas 

 Howell, in Ore. G.P. 1:43. -Int. 1888. 



15. Missouri^nsis, Nutt. (/. Tolmiedna, Herb.) Lvs. 

 pale green, finely ribbed, 1-1>^ ft. long: stem 1-2 ft. long, 

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

 down: pedicel long: tube very short: limb bright lilac; 

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

 claw; inner segments oblong, straight, erect. Wet soil, 

 S. Dak. and Mont, to Ariz. Gn. 50: 1082. -Not common 

 in cult. Flowers early. 



