IRIDACEA, 113 
Outer segments of perianth larger, recurved or spreading; the inner erect or incurved: 
style-branches petaloid, curving over the linear anthers...... ofa sre share rerabeyacureters ote 1 
Segments nearly alike: stigmas filiform: filaments often united..........2.-.e+00+-2. 3 
1. IRIS, Tournefort. 
* Perianth-tube stem-like above the ovary, 4-8 in. long. stems leafy....00-+--0+20e004 1,3 
** Perianth-tube short and funnelform above the ovary. 
Stems leafy: bracts (enclosing peduncles and buds) green, often distant............ 3, 4 
Stems naked or with 1 or 2 leaves, terete: floral bracts not distant................ 5, 6 
Stems with many bracts and rigid radical leaves............2eseeeeceeeeeres arsoeaats 7 
Stems with 2-3 short bract-like leaves, 2-flowered..........ccec cece re ccecncceesenes 8 
1, I. macrosiphon, Torr. Stems very slender, flattened, surpassed by the dark 
green grags-like leaves: flowers rich purple-blue, on short pedicels; tube 1-3 in. long; 
sepals 14-2 in, long. S. F. Bay to Humboldt Bay. Placer Co. 
2. I. Douglasiana, Herbert. Stouter and taller stems: leaves and bracts broader, 
pedicels longer; tube shorter; sépals usually with a white center, blue-purple or lilac: 
often yellow or buff. S. F. Bay to Siskiyou Mts. 
3. I. Hartwegi, Baker. Stems slender, flattened, 2-9 in. high: leaves 2-3 lines wide: 
flowers light colored. S.N. Mts. June. 
4, I, tenax, Dougl. Similar, taller, 1-flowered: flowers larger, bright lilac-purple, 
segments 2-24 in. long. Or. to Br. Col. 
5. LL longipetala, Herbert. Stems stout, equaling the leaves, 3-5-flowered: sepals 
lilac or whitish, purple and yellow veined, 24-3 in. long. Monterey to Or. 
6. IL Mlissouriensis, Nutt. More slender: leaves narrower: bracts dilated, scarious, 
1-14 in. long: flowers pale blue. N. Cal. to Or. 
7. I. bracteata, Watson. Leaves striate, sides unlike: perianth yellow, 2-3 in. long, 
(Howell’s Iris.) Discovered by Thos. Howell in 8. W. Or., 1884. 
& LL tenuis, Wats. Perianth white, veined with yellow and purple, 1} in. long, 
(Henderson’s Iris.) Discovered by L. F. Henderson in Or., 1881. 
2. SISYRINCHIUM, Linnzus, 
8. bellum, Wats. Flowers blue, purple-striped, 4-lin. broad. Cal., Or. 
S. Californicum, Ait. f. Scape winged: flowers yellow. Coast. Wet placea, 
8. grandiflorum, Dough. Flowers red-purple, 1-14 in. broad. N. Cal. to Br. Col 
po 
LILIACEX, 
$1. Floral bracts not leaf-like: perianth persistent: anthers introrse: style entire. 
* Flowers in umbels or heads upon naked scapes: root a bulb or corm. 
@ Perianth parted to the base or nearly so: stamens at base; anthers versatile, 
13 
