GENTIAN FAMILY 665 



Sepals 4, nearly distinct, narrow. Corolla rotate, deeply -l-cleft: lobes convolute 

 in bud. each with a single round gland, without a crown. Stamens 4, inserted 

 at the base of the corolla: filaments subulate: anthers versatile. Ovar>- 1-ceUed: 

 stigma 2-lobed. Capsule flattened parallelly to the valves. Seeds orbicular, 

 wing-margined . 



1. F. fastigiata Pursh; Heller. Stem 6-10 dm. high, glabrous: basal 

 leaves 2—1 dm. long, glabrous, oblanceolate to broadly spatulate, obtuse or acute, 

 5-S cm. wide, thin, feather- veined : stem-leaves verticillate, usually in 3's, oblong 

 or lanceolate, sessile, acute: inflorescence an interrupted, much compoiind pan- 

 icle or th\Tsus: coroUa pale blue: lobes lance-oblong or elliptic, acute, thin. Hill- 

 sides and open woods: Ida. — Wash. — Ore. Submord. My-jl 



10. LEUCOCRASPEDUM Rydb. 



Perennials with taproots. Leaves opposue or whorled, narrow, firm, with 

 white margins. Flowers perfect, thjTSoid or paniculate. Sepals -1. almost 

 distinct, persistent. Corolla rotate, deeply 4-parted, marcescent: lobes each 

 with a single gland usually contiguous with a decurrent crown, saccate at the 

 base. Stamens inserted on the base of the coroUa: filaments subulate to ovate. 

 Style slender; ovar\- 1-oeUed. Capsule usually flattened parallelly to the flat- 

 tish valves. Seeds mostly flat and margined. 



Scales between the stamens wanting (represented by merely hairs » ; corolla greenish yellow. 

 Basal leaves oblanceolate: lower stem-leaves linear. 1. L. albomarginatunu 



Basal leaves lanceolate; lower stem-leaves long-acuminate from an ovate base. 



2. L. uiahense. 

 Scales between the stamens present, fringed or cleft. 



Flowers creamy white: plant glabrous. 3. L. monianum. 



Flowers blue. 



Plant puberulent: inflorescence dense: interstaminal scales lanceolate. 



4. L. albicaule. 

 Plant glabrotis: inflorescence mwe opem; interstaminal scales obovate «■ <H'bicular. 



5. L. coeruleum. 



1. L. albomarginatura S. Wats.) Rydb. Stem 3-10 dm. high, glabrous: 

 basal leaves '■ v.: 1 dm. long, glabrous: stem-leaves linear or the floral ones 

 reduced to subulate bracts, verticillate in 3's or 4's, rarely opposite: inflorescence 

 open, often flat-topped: sepals lanceolate, 4—5 mm. long: coroUa greenish yeUow: 

 lobes ovate, cuspidate-aciuninate. 6-S mm. long: gland elongate, extending from 

 the base to above the middle of the coroUa-lobe, obcordate at the summit. Fra- 

 sera albomarginata S. Wats. Ehy- regions: s Utah — Xev. — ^Ariz. Son. 



2. L. utahense (M. E. Jones > Rydb. Stem glabrous, 1-2 m. high, erect: 

 basal leaves kinceolate, long-acuminate, 2—4 cm. wide, strongly 3-ribbed and 

 ^"ith intermediate ribs: lower stem-leaves opposite, 7—10 cm. long, about 2 cm. 

 wide, gradually tapering to a slender point . the upper bract-like : inflorescence 

 open, its branches divaricate: sepals broadly ovate, aeute or abruptly acimiinate, 

 about 4 mm. long: corolla yellowish green, with purple spots: lobes oblong- 

 obovate, obtuse. F. utahensis M. E. Jones. Moxmtains: s Utah. Sori. Je. 



3. L. montanum (^lulfordi Rydb. Stem glabrous. 3-9 dm. high; basal 

 leaves narrowly oblanceolate, ghibrous, 1.5-2 dm. long: stem-leaves opposite, 

 hnear, the upper spreading or reflexed: inflorescence many-flowered, dense; 

 sepals linear-stibulate, about 6 mm. long: coroUa creamy white: lobes 6-S mm. 

 long, oblong, acute; glands oblong-obovate, near the base of the coroUa-lobes 

 and of scarcely one-third their length, short-fringed on the margins. F. moniana 

 MiUford. Moimtains: Ida. Submont. Jl. 



4. L. albicaule vDougl.^ Rydb. Stems about 3 dm. high, erect, strict, 

 finely puberulent : basal leaves narrowly linear-oblanceolate, about 1 dm. long, 

 4—15 mm. wide, 3-ribbed: white margins ver^* narrow; stem-leaves opposite, 

 narrowly linear, 6-10 cm. long, the upper spreading or reflexed: sepals linear- 

 lanceolate or linear-subulate, 6-S mm. long: coroUa blue: lobes ovate-lanceolate, 

 acuminate, thin, S-10 mm. long: gland Imear, extending from the base of the 

 coroUa-lobes to their middle, fringed at the margin. F. albicaulis Dougl. Hill- 

 sides and meadows: Wash. — Ore. — Ida. Submont. ^Iv-Je. 



