242 UMBELLIFERAE 



leaves short-petiolate, ternate or quinate, the leaf-divisions ovate or oval, toothed or in- 

 cised; rays 12-16, 1-3 cm. long; fruit oblong to oval, 2-4 mm. long. 



Woods, mainly Transition Zone; eastern Washington and Oregon, east to the Atlantic States. Type 

 locality: New York and New Jersey. May-June. 



31. TAUSCHIA Schlecht. Linnaea 9: 607. 1834. 



Acaulescent or caulescent herbs, with pinnately or ternately divided leaves. Involucre 

 usually absent; involucel of usually prominent bractlets. Sepals evident, or wanting. 

 Flowers yellow, purplish or white. Fruit orbicular to linear-oblong, flattened laterally, 

 glabrous. Carpels with 5 slender or prominent ribs. Stylopodium none. Oil-tubes solitary 

 to several in the intervals, and 2 to several on the commissure. Seeds nearly terete, the 

 face sulcate. [Name in honor of I. F. Tausch, European botanist of the nineteentli 

 century.] 



A genus of 20 species in western North America, Mexico and Central America. Type species, Tauschia 

 nudicaulis Schlecht. 



The species of this genus occurring in the Pacific States have been variously referred to Drudeophytum, 

 Deweya, Hespcrogcnia, and Velaea. 



Leaves simply pinnate or ternate. 



Leaflets entire, linear, lanceolate or oblong-lanceolate. 



Flowers yellow; involucel present; fruit suborbicular. \. T. Stricklandii. 



Flowers white; involucel none; fruit linear-oblong. 2. T. Hooveri. 



Leaflets serrate, oblong to oval. i. T. arguta. 



Leaves ternate-pinnate or ternately or pinnately decompound. 



Sepals obsolete. ♦ 



Plants more or less scabrous, at least in the inflorescence. 



Involucels conspicuous; fruit 4-7 mm. long. 4. T. Hartwegii. 



Involucels inconspicuous; fruit 3-5 mm. long. 5. T. Kelloggii. 



Plants glabrous and glaucous. 6. T. glauca. 



Sepals evident; plants glabrous. 



Umbels open; fruit 5-8 mm. long. 7. T. Parishii. 



Umbels contracted; fruit 2-4 mm. long. 8. T. Howellii. 



1. Tauschia Stricklandii (Coult. & Rose) Math. & Const. Strickland's 



Tauschia. Fig. 3530. 



Hesperogenia Stricklandii Coult. & Rose, Contr. U.S. Nat. Herb. 5: 203. pi. 27. 1899. 

 Tauschia Stricklandii Math. & Const. Bull. Torrey Club 68: 121. 1941. 



Stemless or nearly so, 10-25 cm. tall. Leaves 3 or 4, basal, without stipular bases, pinnate 

 to ternate or biternate ; leaf-divisions lanceolate, acute, 10-30 mm. long, glabrous ; petioles 2-10 

 cm. long ; peduncles 5-20 cm. long, naked or with 1 or 2 bract-like leaves ; flowers yellow ; rays 

 2-7, unequal, up to 15 mm. long; fruit suborbicular 2-2.5 mm. long, sessile or short-pedicellate; 

 styles long, reflexed. 



Mountain meadows. Boreal Zones; Mount Rainier, Washington. The only known station. Aug.-Sept. 



2. Tauschia Hooveri Math. & Const. Hoover's Tauschia. Fig. 3531. 



Tauschia Hooveri Math. & Const. Madrofio 7: 65. fig. 1. 1943. 



Stemless, 10-14 cm. high from a globose tuber, glabrous and glaucous. Leaves deltoid- 

 triangular, pinnate to bipinnate; leaflets linear, acuminate, callous-tipped; petioles 2-3 cm. long; 

 bractlets wanting ; flowers white ; rays 3-7, 2-10 mm. long ; fruit linear-oblong, 5-7 mm. long, 

 short-pedicellate ; styles short, recurved. 



"Scablands" with sagebrush, Upper Sonoran Zone; south-central Washington. Type locality: Near Cowiche, 

 Yakima County, Washington. Feb.-April. 



3. Tauschia arguta (Torr. & Gray) J. F. Macbride. Southern Tauschia. 



Fig. 3532. 



Deweya arguta Torr. & Gray, FI. N. Amer. 1: 641. 1840. 



Velaea arguta var. ternata Coult. & Rose, Bot. Gaz. 14: 282. 1889. 



Tauschia arguta J. F. Macbride, Contr. Gray Herb. No. 56: 32. 1918. 



Stems 3-7 dm. high, or rarely nearly acaulescent. Leaves pinnate or 3-foliate by reduc- 

 tion ; leaflets 5-7, 3-8 cm. long, oblong to oval, the lowest pair often subcordate, finely and 

 sharply mucronate-serrate or spinulose-toothed, the terminal and lowest often 3-lobed; rays 

 12-25, 2-12 cm. long; pedicels 3-9 mm. long; fruit oblong, 6-9 mm. long. 



Open woods and chaparral, Upper Sonoran Zone; coastal southern California and northern Lower Cali- 

 fornia. Type locality: San Diego, California. April-June. 



