66 Coville New Plants from Southern California, 



edge of the Darwin Mesa, Inyo County, California, by Frederick 

 V. Coville. 



A. linear ifolius. first collected in California by Douglas, prob- 

 ably near San Francisco or Monterey, is known only from the 

 coast ranges southward from San Francisco bay. A. interior is 

 a species of the desert mountains, and has been collected in the 

 higher elevations of the Lower Sonoran region from southern 

 Utah, north western Arizona, and Inyo County, California, south- 

 ward to the extra-coastal region of San Diego County. 



Arctomecon merriami sp. nov. 



Plant apparently perennial, from a thick woody root, branch- 

 ing into a broad cespitose tuft 10 cm. or less high ; leaves cune- 

 ate-oblanceolate, 2 to 3 cm. long, tapering below 7 into a margined 

 petiole, tridentate at the truncate apex, glaucous, clothed with 

 very long (about 1 cm.), white, spreading, flexuous, barbellate 

 hairs ; upper leaves sessile, often entire and acute or obtuse at the 

 apex ; peduncles several, erect, 20 to 35 cm. high, glabrous, glau- 

 cous, rarely with a bract (similar to the leaves) below ; flower sin- 

 gle, in bud inclined to nod ; sepals usually 3, hairy like the leaves, 

 caducous; petals usually 6, white, obcordate, 3 to 3.5 cm. long, 

 deciduous; stamens very numerous ; anthers 3 to 4 mm. long 

 when wet ; filaments slender, glabrous, some of them conspicu- 

 ously broader above; ovary narrowly oblong, 1-celled, with 6 or 

 7 parietal placenta? ; style about 1.5 mm. long and broad ; stigma 

 capitate and with a stigmatic line opposite each placenta ; cap- 

 sule linear-oblong, in our specimens 3.5 to 4.1 cm. long ; valves 

 splitting down at the apex for a distance of 8 mm. ; seeds not seen. 



Type specimen in the United States National Herbarium, No- 

 1890, Death Valley Expedition; collected May 1, 1891. a few 

 miles west of Vegas ranch, Lincoln County, Nevada, by C. Hart 

 Merriam and Vernon Bailey. 



This plant differs from A. californicum it its usually 1 -flowered 

 bractless peduncles, long-hairy sepals, white petals, longer dilated 

 filaments, linear-oblong ovary and capsule (4 cm. long), and evi~ 

 dent style. A. californicum has, on the other hand, 6- to 20-flow- 

 ered, leafy-bracted peduncles, glabrous sepals-, deep yellow petals, 

 filaments of uniform width, obovoid ovary, sessile stigma, and 

 an ovate capsule about 1.5 cm. long. 



This beautiful poppy is dedicated to Dr. C. Hart Merriam as 

 a token of his influence in the progress of geographic botany. 



