WOOTON AND STANDLEY—FLORA OF NEW MEXICO. 237 
KEY TO THE SPECIES. 
Perennials; petals about twice as long as the sepals, 
Lower leaves oblong or oblanceolate, obtuse. .......-. 1. C. beeringianum. 
Lower leaves linear or linear-lanceolate, acute. 
Leaves all linear or linear-lanceolate............---- 2. C. scopulorum, 
Leaves of the inflorescence ovate........--------- 3. C. oreophilum, 
Annuals; petals only slightly or not at all exceeding the 
sepals. 
Lower leaves sericeous........-----22.+-0+2+e+--2- 0+ 4, C. sericeum, 
None of the leaves sericeous. 
Pedicels in fruit 1 to 3 times as long as the calyx, 
usually straight or nearly so........-------- 5. C. brachypodum., 
Pedicels in fruit 5 times as long as the calyx or more, 
strongly curved.........-.---.--0-----eeee- 6. C. longipedunculatum. 
1. Cerastium beeringianum Schlecht. & Cham. Linnaea 1: 62. 1826. 
Type Locatity: ‘Ad sinus Eschscholzii et bonae spei.”’ 
Range: British America to Arizona and New Mexico. 
New Mexico: Upper Pecos River (Bartlett 178). Damp woods. 
2. Cerastium scopulorum Greene, Pittonia 4: 298. 1901. 
Type LocaLity: La Plata Mountains, Colorado. 
Rance: Wyoming to New Mexico. 
New Mexico: Rio Pueblo; Winsors Ranch; Magdalena Mountains; Organ Moun- 
tains; White and Sacramento mountains. Damp woods, in the Transition Zone. 
3. Cerastium oreophilum Greene, Pittonia 4: 297. 1901. 
Type LOCALITY: Foothills of the Rocky Mountains near Fort Collins, Colorado. 
Range: Colorado and New Mexico to California. 
New Mexico: Northwestern corner of the State (Palmer). 
4. Cerastium sericeum 8S. Wats. Proc. Amer. Acad. 20: 354. 1885. 
Typr LOCALITY: Huachuca Mountains, Arizona, — 
Rance: Southern New Mexico and Arizona. 
New Mexico: West Fork of the Gila ( Wooton). 
A most striking species, at once distinguished from all our others by the dense 
sericeous pubescence of the lower leaves, — 
5. Cerastium brachypodum (Engelm.) Robinson in Britton, Mem. Torrey Club 5: 
150. 1894. 
Cerastium nutans brachypodum Engelm.; A. Gray, Man, ed. 5, 94. 1867. 
Type LOCALITY: Illinois. 
RANGE: South Dakota and Montana to Texas and Arizona, south into Mexico. 
New Mexico: Santa Fe and Las Vegas mountains; Mogollon Mountains; Burro 
Mountains; Hillsboro; White Mountains. Damp woods, in the Transition Zone. 
6. Cerastium longipedunculatum Muhl. Cat. Pl. 46. 1813. 
Cerastium nutans Raf. Préc. Somiolog. 36. 1814. 
Tyre Locality: Pennsylvania. 
Rance: British America to North Carolina and Arizona. 
New Mexico: Mogollon Mountains; Burro Mountains; Sawyers Peak; Organ 
Mountains; White Mountains. Damp woods, in the Transition Zone. 
