1670 



IRIS 



IRIS 



D. Fls. yellow. 



E. The spathe-vahes membra- 

 nous, much inflated, altnost 



wholly green 22. imbricata 



EE. The spathe-vahes firm, not 

 inflated, almost wholly sca- 



rious 23. flavescens 



DD. Fls. purple, violet, lilac, or white; 

 inner segms. sometimes yel- 

 lowish. 

 E. Spathe-vahes much inflated. .24. Alberti 

 EE. S pathe-valves scarcely inflated. 



F. Lateral heads subsessile . . . 25. florentina 

 FF. Lateral heads stalked. 



G. The spathe-vahes nar- 

 row acuminate, almost 

 wholly green, scarious 

 only at the tip and 



edges 26. Biliottii 



GG. The spathe-vahes narrow 

 acuminate, scarious in 

 the upper half ajid 

 much tinged with pur- 

 ple 27. trojana 



GOG. The spathe-vahes broad, 

 navicular, not tinged 

 with purple. 

 H. Lvs. glaucous, broad. .2S. Junonia 

 HH. Lvs. slightly gluucous, 

 blue-green, com- 

 paratively 7iarrow... .29. cypriana 

 GGGG. The spathe-vahes broad, 

 navicular, much tinged 

 ' with purple 30. germanica 



The following four forms cannot be separated from 

 each other and from some of the foregoing forms by 

 Btrictly botanical characteristics. They are probably 

 varieties of hybrid origin as indicated in the descrip- 

 tions. 



Outer segms. blue to pale violet or white; 



inner segms. white 31. hybrida 



Outer segms. blue to bright lilac; inner 



segms. lighter 32. neglecta 



Outer segms. blue-purple with faint 



darker veins; inner seg?ns. smoky 



yellow and pale purple 33. sambucina 



Outer segms. lilac-purple; inner segms. 



smoky yellow and pale lilac 34. squalens 



6. pfimila, Linn. (/. nolacea, Sweet. /. taurica, 

 Lodd. I. cseriilea, Spach). Fig. 1967. Lvs. linear, 2-4 

 in. long: st. none or very short, 1-headed: spathe- 

 valves scarious at the tip; fls. fugitive, yellow, or bright 

 or dark lilac; limb 2 in. long. Austria-Hungarv, Asia 

 Minor, S. Russia. L.B.C. 16:1506, 1574. R.H. 1903:132. 

 G.M. 49:225 (var. bicolor); Gn. M. 15:360.— A dwarf, 

 hardy plant, spreading rapidly in borders. Has many 

 color varieties ranging from dark reddish purple to 

 light purple and yellow. Var. attica, Boiss. & Heldr. 

 (/. attica, Boiss. & Heldr.). Lvs. narrow, falcate: fls. 

 pale straw-yellow tinged with green; segms. with 

 inconspicuous purplish veins, the outer with a purplish 

 or greenish brown patch. Gt. 11:. 377. Var. violacea, 

 Ker. Fls. bright blue. B.M. 1261. Var. Ifitea, Ker. Fls. 

 pale yellow. The common yellow form. B. M. 1209. 

 — The following trade names which are self-explana- 

 tory have been appUed to some of the numerous color- 

 varieties of this species: /. alba, I. atropurpurea, I. 

 atroviolacea, I. azurea, I. bicolor, If. cceleslis, I. bitea, I. 

 suljphurea. I. gracilis, E. Berg, is probably a hybrid of 

 this species. 



7. pseudo-pftmila, Tineo (/. panormilAna, Tod.). 

 Lvs. ensiform, glaucescent, 6-9 in. long, narrowed sud- 

 denly to an oblique tip : st. 1-headed, 6-8 in. long, clothed 

 with bracts, 1-fld.: tube 2-234 in. long; spathe-valves 

 green: fls. varying from yellow to bright lilac; outer 

 segms. oblong unguiculate, 2-2J/2 in. long; inner segms. 



rather broader. Mountains of Sicily. /. Sldldlse, Tod., 

 is a hybrid or a sport of this species. The seeds give 

 rise to typical /. pseudo-pumila plants. B.M. 6894 is /. 

 erratica, Tod. Probably a similar hybrid. 



8. biflora, Linn. (/. subbiflora, Brotero. /. fragrans, 

 SaUsb. /. nudicaidis, Hook.). Lvs. 6-9 in. long: st. 

 2-10 in. long, compressed, usually bearing 2-3 small 



1966. Iris japonica (XH)- No. 5. 



clasping lvs. which entirely hide it: fls. bright violet- 

 purple; outer segms. obovate-cuneate, 2-2 J-2 in. long, 

 with dark veins and a beard of long, yellow hairs; inner 

 segms. obovate, unguiculate, hghter, with faint veins. 

 Portugal and N. Morocco. B.M. 1130. 



9. Chamaeiris, Bertol. (/. olbiensis, Henon. /. 

 lutescens, Lam. idem, Delarb. /. virescens, Delarb.). 

 Lvs. 3-6 in. long, 3^in. broad: st. 1-10 in. long, bare 

 above with 1-2 reduced lvs. below the middle: fls. 

 bright yellow; outer segms. obovate-cuneate, tinged and 

 veined with brown; inner segms. oblong. May. Italy, 

 France. B.M. 2861, 6110. Gn. 63, p. 26.— Distin- 

 guished from /. pumila by the evident st., the shorter 

 tube, and the more inflated and less membranous 

 spathe-valves. Var. italica, Pari. Fls. dark violet. 



10. Reichenbachii, Heuff'el. (/. bosmaca, Beck. 

 /. balkana, Janka. /. Reichenbachiana, Baker) . Rhizome 

 stout; tufts crowded: lvs. 3-6 in. long, )4-%"^- wide, 

 increasing in size after flowering-time: st. 6-10 in. long, 

 1-headed, bearing 1-2 reduced lvs.: spathes 1-2-fld., 

 IJ2-2 in. long; valves ventricose, green, or slightly 

 scarious: fls. reddish brown-purple with bluish white 

 beard, or yellow with orange beard; outer segms. obo- 

 vate, cuneatc, 2 in. long, 1 in. broad; inner segms. 

 oblong-elUptical, emarginate, suddenly constricted 

 to a canaliculate claw. Bosnia and Herzegovina 

 to Bulgaria and Macedonia. — Resembles /. Chamstiris, 

 but differs in the flattened, acutely keeled spathes 

 and the thin texture of the fls. The yellow-fld. foi-ms 

 are often slightly veined with purple. 



11. flavissima, Pall. (/. arenaria, Waldst.j. Lvs. 

 thin, linear, 4-8 in. long: st. 1-6 in. long, 2-3-fld.: 

 limb bright yellow; outer segms. 1-1 J4 in. long, ^iin. 



