WOOTON AND STANDLEY—FLORA OF NEW MEXICO. 733 
14. Tetraneuris angustifolia Rydb. Bull. Torrey Club 32: 128. 1905. 
Type LocaLiry: White Mountains, New Mexico. Type collected by Wooton 
(no. 374). 
Rance: Colorado to New Mexico and Texas. 
New Mexico: White Mountains. Hills and mountains, in the Upper Sonoran and 
Transition zones. 
117. ACHILLEA L. Yarrow. SNEEZEWEED. 
Perennial herbs with erect leafy stems, finely dissected, alternate, strong-scented 
leaves, and small heads in corymbs at the ends of the branches; involucres campanu- 
late, of appressed imbricated bracts, the outer ones shorter; achenes oblong or 
obovoid, slightly compressed; pappus none. 
KEY TO THE SPECIES. 
Leaves glabrate, green; heads rather few, loosely corymbose, 6 to 7 
mm, high, long-pedunculate.......-..--..------------+----- 1. A. laxiflora. 
Leaves densely arachnoid; heads numerous, in a dense corymb, 
about 4 mm. high, short-pedunculate. 
Bracts with pale brownish margins; plants 25 to 80 cm. high.. 2. A. lanulosa, 
Bracts with dark brown, nearly black margins; plants less than 
20 cm. high..:....--.------------ 22-2 - ee eee eee eee ee eee 3. A. subalpina. 
1. Achillea laxiflora Pollard & Cockerell, Proc. Biol. Soc. Washington 15: 179. 1902. 
Type LocALity: Sandia Mountains, New Mexico. Type collected by Miss Charlotte 
C. Ellis in 1900. 
RancGE: Mountains of northern New Mexico. 
New Mexico: Sandia Mountains; Carrizo Mountains (Standley 7379). Transition 
Zone, . 
The type of the species is a mere fragment, consisting of the terminal portion of a 
branch with two small leaves. The plant from the Carrizos seems to be the same, 
although the inflorescence is composed of more numerous heads in a denser corymb. 
The latter plant grew in oak thickets among pine trees. It is from 80 to 100 cm. high, 
with numerous large, broad, bright green leaves, the upper ones but little reduced. 
The leaf segments are widely spaced on the rachis, not crowded as in A. lanulosa, and 
they are much larger than in that species. 
2. Achillea lanulosa Nutt. Journ. Acad. Phila. 7: 36. 1834. 
TypE LocALITty: Rocky Mountains. 
RanGE: British Columbia and South Dakota to Kansas and Texas and southward. 
New Mexico: Common in all the higher mountains. Meadows, in the Upper 
Sonoran and Transition zones. 
8. Achillea subalpina Greene, Leaflets 1: 145. 1905. 
Achillea lanulosa alpicola Rydb. Mem. N. Y. Bot. Gard. 1: 426. 1900. 
Achillea alpicola Rydb. Bull. Torrey Club 33: 157. 1906. 
TyPE LOCALITY: Subalpine slopes of Mount Ouray, southern Colorado. 
Rance: Montana to northern New Mexico. 2 
New Mexico: Truchas Peak; Jemez Mountains; Pecos Baldy. High mountain 
meadows, in the Arctic-Alpine Zone. 
118. ANTHEMIS L. 
Glabrous or pubescent, branched, ill-scented annual with dissected leaves; heads 
pedunculate, the receptacle convex, bearing filiform bracts; rays white; achenes 
10-ribbed, rugose; pappus none. 
