234 UMBELLIFERAE 



4. Perideridia oregana (S. Wats.) Mathias. Oregon Yampah. Fig. 3508. 



Endosmia oregana Nutt. ex Torr. & Gray, FI. N. Amer. 1: 612, as synonym. 1840. 

 Carum oreganum S. Wats. Proc. Amer. Acad. 20: 368. 1885. 

 Perideridia oregana Mathias, Brittonia 2: 243. 1936. 



Plants slender, 3-6 dm. tall, from a fascicle of fusiform or ovoid tubers. Leaves l--2-ternate 

 or ternate-pinnate ; leaflets linear to narrowly lanceolate, 1.5-6.5 cm. long, the terminal often 

 elongate ; involucre of several linear to lanceolate, scarious bracts ; rays 6-20, 1-3 cm. long ; 

 bractlets conspicuous, scarious, linear to lanceolate; pedicels 2-5 mm. long; styles 1-1.5 mm. 

 long; fruit oblong-ovoid, 2.5-3.5 mm. long; oil-tubes solitary in the intervals, 2 on the com- 

 missure. 



Moist meadows, Boreal and Humid Transition Zones; western Washington to northern California. Type 

 locality: "Wappatoo [Suavies] Island," at the mouth of the Willamette River, Oregon. July-Aug. 



5. Perideridia Parishii (Coult. & Rose.) Nels. & Macbr. Parish's Yampah. 



Fig. 3509. 



Carum Gairdncri var. latifolium A. Gray, Proc. Amer. Acad. 7: 344. 1868. 



Pimpinella Parishii Coult. & Rose, Bot. Gaz. 12: 157. 1887. 



Eulophus Parishii var. Rusbyi Coult. & Rose, Bot. Gaz. 14: 281. 1889. 



Carum Lemmonii Coult. & Rose, op. cit. 283. 



Eulophus simpler Coult. & Rose, Contr. U.S. Nat. Herb. 7: 112. 1900. 



Perideridia Parishii Nels. & Macbr. Bot. Gaz. 61: 33. 1916. 



Plants slender, 2-8 dm. tall, from a solitary tuber or a fascicle of fusiform or ovoid tubers. 

 Leaves ternate, or sometimes simple or biternate; leaf-divisions linear to lanceolate, 2-10 cm. 

 long, the terminal often elongate; involucre usually absent; rays 8-15, unequal, 1-4 cm. long; 

 bractlets conspicuous, linear to obovate, scarious or colored; pedicels 3-8 mm. long; styles 1-3 

 mm. long ; fruit oblong to ovoid, 2.5-3.5 mm. long ; oil-tubes 2-^ in the intervals, 6 on the com- 

 missure. 



Moist meadows, Boreal Zones; Sierra Nevada, to southern California, eastward to Nevada and Arizona. 

 Type locality: Bear Valley, San Bernardino Mountains, California. July-Sept. 



6. Perideridia Bolanderi (A. Gray) Nels. & Macbr. Bolander's Yampah. 



Fig. 3510. 



Podosciadium Bolanderi A. Gray, Proc. Amer. Acad. 7: 346. 1868. 

 Perideridia Bolanderi Nels. & Macbr. Bot. Gaz. 61: 33. 1916. 

 Eulophus Bolanderi var. benignus Jepson, Madrono 1: 130. 1923. 

 Eulophus cuspidatus Jepson, op. cit. 133. 



Plants slender, 2.5-8 dm. tall, from a fascicle of fusiform tubers. Leaves ternate-pinnately 

 dissected; leaf-divisions oblong to filiform, 0.5-3 cm. long, the terminal often elongate, 5-8 cm. 

 long, the lateral usually lobed and toothed, the petioles and rachis somewhat inflated ; involucre 

 of 1 to several narrowly lanceolate to linear, scarious bracts; rays 10-20, 1-2.5 cm. long; bract- 

 lets narrowly lanceolate to obovate, scarious; styles 1-2 mm. long; fruit oblong, 3-5 mm. long; 

 oil-tubes 2-5 in the intervals, 6 on the commissure. 



Drv meadow lands and slopes, mainly Arid Transition Zone; eastern Oregon to the Sierra Nevada, central 

 California east to Wyoming and Utah. Type locality: Mariposa Trail, Yosemite, California. June-Aug. 



7. Perideridia Pringlei (Coult. & Rose) Nels. & Macbr. Pringle's Yampah. 



Fig. 3511. 



Eulophus Pringlei Coult. & Rose, Rev. N. Amer. Umbell. 113. 1888. 

 Perideridia Pringlei Nels. & Macbr. Bot. Gaz. 61: 33. 1916. 



Plants slender, 3-6 dm. tall, from a cluster of elongate fusiform tubers. Leaves pinnately 

 dissected; leaf-divisions narrowly linear, 0.2-8 cm. long, the petioles and rachis broadly mflated; 

 involucre of a few small lanceolate bracts, or absent ; rays 5-8, 3-8 cm. long ; bractlets several, 

 narrowly subulate, scarious ; pedicels 5-10 mm. long ; styles about 1 mm. long ; fruit oblong, 4-6 

 mm. long, oil-tubes 3-5 in the intervals, 8 on the commissure. 



Canyons and open slopes. Upper Sonoran Zone; Coast Ranges and Tehachapi Mountains of central Cali- 

 fornia to southern California. Type locality: California. April-July. 



8. Perideridia californica (Torr.) Nels. & Macbr. California Yampah. Fig. 3512. 



Chaerophyllum ? californicum Torr. Pacif. R. Rep. 4^: 93. 1857. 

 Perideridia californica Nels. & Macbr. Bot. Gaz. 61: 33. 1916. 

 Eulophus californicus var. sanctorus Jepson, Madrono 1: 130. 1923. 



Plants slender, 5-10 dm. tall, from a fascicle of fusiform tubers. Leaves ternate-pinnately 

 dissected; leaf-divisions usually dimorphic, the terminal linear, elongate, entire, 3-8 cm. long, 

 the lateral linear to ovate, entire to pinnatifid, 0.5-3 cm. long, rachis and petioles often slightly 

 inflated ; involucre of several linear-lanceolate bracts ; rays 5-10, 2,-6 cm. long ; bractlets lanceo- 

 late to ovate-lanceolate, scarious or colored ; pedicels 5-10 mm. long ; styles about 1 mm. long ; 

 fruit oblong, 6-8 mm. long ; oil-tubes solitary in the intervals, 4 on the commissure. 



Wet soil, Arid Transition and Upper Sonoran Zones; central California, Sierra Nevada foothills and Inner 

 Coast Ranges. Type locality: Knights Ferry, Stanislaus County, California. June-Aug. 



