GOOSEFOOT FAMILY 249 



pistillate flowers in axillary clusterSj the staminate ones in short crowded ter- 

 minal spikes; fruiting bracts about 4 mm. long. Alkaline valleys: Colo. Son. 

 My-Au. 



28. A. oblanceolata Rydb, Suflfruticose perennial, with decumbent b^se 

 and ascending branches, about 2 dm. high; leaves 2-3 cm. long, obtuse or acutish; 

 pistillate flowers in small axillary clusters; fruiting bracts ovate in otitline, 

 slightly dentate, tubercled or irregularly crested on the back. Alkaline or 

 clayey flats: Mont. — Colo. Plain. Jl-Au. 



29. A. Nuttallii S. Wats. Suffruticose or shrubby j>erennial; stems 3-6 

 dm. highj branching near the base; leaves 2-5 cm. long; pistillate flowers in 

 axillary clusters; fruiting bracts ovate or orbicular, 3-4 mm. long, irregularly 

 toothed, muricate or tooth-crested on the faces. Plains, bad-lands, and arid 

 valle^-s: Sask.^Neb. — Colo.— Nev. — Ida. PJnin—Suhmoni. Je-S. 



30. A. falcata (M. E, Jones) Standi. Sufi'ruticose perennial;^ stem 2-5 

 dm. high, with ascending branches; leaves 1.5-5 cm. long, 2-7 mm. mde; flower- 

 clusters both axillary and in terminal spikes; fruiting bracts 5-8 mm. long, entire- 

 margined or sparsely dentate at the apex, united to near the tip, often muricate 

 or tuberculate below. A, N uttallii falcaia and A. Nuttallii anomala M. E. Jonei'. 

 Plains and hillsides: Wash. — Ida.— Utah — Nev. Son, 



31. A, cuneata A. Nels. Suffruticose perennial; stem branched near the 



base, decumbent; leaves numerous, petioled; leaf-blades 1-3 cm. long; pistillate 

 flowers in axillary clusters; fruiting bracts ovate or suborbicular, irregularly 

 toothed and with thick flattened processes on the faces. Arid plains: sw Colo, 

 — Utah^N.M.— Ariz. Suhmont. Je-Jl. 



32. A. birxifolia Rydb. Suffruticose perennial; stem branched near the 

 base, with simple branches, 3-4 dm. high; leaves thick, 1-2 cm. long; pistillate 

 flowers in axillary clusters; fruiting bracts ovate, acute, 4-5 mm. long, toothed 

 on the margins and with thick, often flattened processes on the faces. Dry 

 plains: Wyo. Suhmont, Au. 



33. A. Garrettii Rydb. A low shnib, with straw-colored branches; leaves 

 short-petioled, oval, grayish on both sides; flowers in axillary and terminal clus- 

 ters; bracts 8 mm. long and as broad, 4-winged, coarsely toothed, sometimes 

 \vith processes on the back; free portion 1-2 mm. long. Hills: se Utah. Son. 

 Ji. 



34. A. aptera A. Nels. A shrubby perennial; stems with shining, white, 

 more or less flaky bark, 1-4 dm. high; leaves narrowly oblanceolate to oblong, 



-acute or obtuse, 2-4 cm. long, entire; pistillate flowers axillary: fruiting bracts 

 3-4 mm. broad, reticulate and ribbed. A. odonloptem Rydb. Saline flats; Alta. 

 — Colo. Plain — Submont, Jl-Au. 



35. A. canescens (Pursh) Nutt. Shrubby perennial; leaves 2-5 cm. long; 

 pistillate flowers axillarv, short-pedicelled, the staminate chLsters in subterminal 

 spikes; fruiting bracts "orbicular in outline, when fully developed 12--15 mm. 

 broad. Dry mesas and alkaline valleys: S.D. — Ivans. — N.M. — Cahf.— Ore. 

 Plain— SuhmonL Je-Au. 



36. A. tetraptera (Benth.) Rydb. 



leaves 2-4 cm. lone 



hig: 



clusters forming subtcrr. ^ , - ^ 



reticulate. Desert regions: s'lltah— Ariz.^ Calif.— Nev. L, Son. Ap-Jl. 



37. A. occidentalis (Torr.) D. Dietr. Shrubby perennial; stem 5-20 dm. 

 high, divaricately branched and somewhat spinose; leaves 2-4 cm. long, 2-5 mm. 

 wide, linear or oblanceolate, obtuse or even retuse; pistillate flowers axillarv^ 

 the staminate clusters forming terminal panicles; fruiting bracts 16-18 mm. 

 broad. Arid plains: Tex.— Colo.— Utah— Ariz.; n Mex. Son. My-Jl. 



8* ENDOLEPIS Torr. 



^lonoecious or dioecious annual herbs. Staminate flowers ebracteate in 

 glomerate terminal soikes; calvx eamosepalous, urceolate, 5-lobed, each lobe 



