



CATALOGUE OF SPECIES. 59 



Ranch, Lincoln Comity, Nevada (No. 1889). On the 3d of May, 1844, Fremont trav- 

 eled over precisely the same ground, and, as the plant is very conspicuous, must 

 have seen it, and undoubtedly collected it. ' 



The plant was found also by Dr. Merriam and Mr. Bailey at Bitter Spring, in the 

 Muddy Mountains, and between Ash Meadows and Oasis Valley, both localities in 

 Nevada. 



Arctomecon merriamiCoville, Proc. Biol. Soc. Wash. vii. 66 (1892). Type local- 

 ity as given below. Plate II. 



"Plant apparently perennial, from a thick woody root, branching into a broad 

 cwspitose tuft 10 cm. or less high ; leaves cuneate-oblanceolate, 2 to 3 cm. long, taper- 

 ing below into a margined petiole, tridentate at the truncate apex, glaucous, clothed 

 with very long (about 1 cm.), white, spreading, nexuous, barbellate hairs; upper 

 leaves sessile, often entire and acute or obtuse at the apex; peduncles several, erect, 

 20 to 35 cm. high, glabrous, glaucous, rarely with a bract (similar to the leaves) be- 

 low; ilower single, 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, 

 Borne of them conspicuously broader above; ovary narrowly oblong, 1-celled, with 6 

 or 7 parietal placentas ; style about, 1.5 mm. long and broad; stigma capitate and 

 with a stigmatic line opposite each placenta; capsule linear-oblong, in our speci- 

 mens 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. oaliformcum in its usually 1-llowered bractless pedun- 

 cles, long-hairy sepals, white petals, longer dilated filaments, linear-oblong ovary 

 and'capsule (4 cm. long), and evident style. A . caUfornieum has, on the other hand, 

 6- to 20-flowered, leafy-bracted peduncles, glabrous sepals, deep yellow petals,^ fila- 

 ments of uniform width, obovoid ovary, sessile stigma, and ovate capsule about 1.5 



cm. long. 



"This beautiful poppy is dedicated to Dr. C. Hart Merriam as a token of his in- 

 fluence in the progress of geographic botany." 



Fruiting specimens were found by Mr. Bailey in February on the mountain slope 

 near the Resting Springs Mine, a point within the State of California, and by the 

 writer, near the type locality, March 9, 1891 (No. 132). 



Argemone platyceras Link &, Otto, Ic. PI. Rar. i. 85 (1828.) Type locality, "in 

 Mexico, in Confre de Perote prope Hacienda de la Laguna." 



Our plant has glaucous, densely prickly stems, leaves, calyx, and capsules, and 

 white flowers. It occurred sparingly at many points in the Upper and sometimes in 

 the Lower Sonoran, both in the desert and on the west side of the Sierra Nevada, be- 

 tween Walker Pass and Tehachapi Valley. Specimens were collected in Johnson 

 Canon, Panamint Mountains (No. 527). 



Dendromecon rigidum Benth. Trans. Hort. Soc. Lond. ser. 2. i. 407 (1835). Type 

 localitv Californian. 



Valley of Kaweah River (No. 1311). These specimens have the narrow leaves 

 characteristic of the type form, and the shrub itself grows to the height of about 2 

 meters. The flowers are 3 to 4 cm. broad and the capsules attain a leugth of 11 cm. 



1 The label of the type specimen confirms this surmise. It reads: " Found at a 

 place called Las Vegas, near the Rio Virgen in Southern Utah." Of the type speci- 

 men only one complete capsule and a portion of another are preserved. 



