Fendleriana and longiligula, pubescent rachilla, short truncate ligule, probably apomictic). Sierra Juarez, Hansen’s Ranch, 21 Jun 1885, C.R.Orcutt 1276a (DS, US). Chihuahua: Barranca del Cobre, SE of Creel 28 mi, N of Rio Urique crossing, ca. 7000ft [2135 m], ca. 27.507 , 107.498 , 14 Apr 1984, R.J.Soreng 2312 R.W.Spellenberg (US, population sample: 10 9 subsp. fendleriana; 1 subsp. albescens); ditto, ca. 25 mi SE Creel, ca. 27.534 , 107.508 , 2313 (US, population sample: 2). N of Basuchil, ca. 10 mi NW of Mi ca, loose crumbling red clay on dry ravine side, near ditch, plateau, arid grassland, 2200 m, 8 May 1929, Y.Mexia 2511 (CAS, MO). Tomachic, 4.2 mi E on road from La Junta to Yecora, ca. 7000 ft [2135 m], 28.375 , 107.7865 , 13 Apr 1984, R.J.Soreng 2306b R.W.Spellenberg (US, population sample: 24 subsp. fendleriana, 2n = 59; 1 subsp. albescens). S of Rancho La Consolacion, canyon in north face of Sierra Rica, 29?1-12’N, 104?-7’W, 1400-2000 m, 3 May 1973, M.C.Johnston, T.L.Wendt F.Chiang-C. 10776A (LL toward subsp.Revision of Poa L. (Poaceae, Pooideae, Poeae, Poinae) in Mexico: …albescens); ditto, 10773C (LL); ditto, 10777 (LL). Coahuila: Sierra del Carmen, south peaks of range, NW side of upper Carboneras Canyon, 28?7’N, 102?4′ W, 2100 m, 2 Apr 1974, T.Wendt 125, E.Lott D.Riskind (TEX). Municipio de Ocampo, east side of Sierra del Carmen, 28?3’N, 102?8’W, 5200 ft [1590 m], 8 May 1981, D.H.Riskind 2391 (TEX). Discussion. This is the most widespread but least common subspecies of P. fendleriana in Mexico. Staminate plants are rare or absent, except in Coahuila where a staminate plant has been collected. Poa fendleriana subsp. fendleriana intergrades with P. fendleriana subsp. albescens in Chihuahua and in southeast Arizona and southwest New Mexico.8c. Poa fendleriana subsp. longiligula (Scribn. T.A.Williams) Soreng, Great Basin Naturalist 45(3): 408. 1985. http://species-id.net/wiki/Poa_fendleriana_longiligula Fig. 8 H Poa longiligula Scribn. T.A.Williams, Circ. Div. Agrostol. U.S.D.A. 9: 3. 1899. Paneion longiligulum (Scribn. T.A. Williams) Lunell, Amer. Midl. Naturalist 4: 222. 1915. Poa fendleriana var. longiligula (Scribn. T.A.Williams) Gould, Madro 10(3): 94. 1949. Type: USA, Utah, Washington Co., Silver Reef, gravel, 3500 ft [1070 m], 3 May 1894, M.E.Jones 5149 (holotype: US-278727!; isotypes: MO!, NY-431282!, OSC!, US-922924!). Description. Leaf collars smooth to scabrous near the throat; ligules of middle cauline leaves (1.5?1.8?8 mm long, decurrent, abaxially smooth or lightly scabrous, upper margin usually smooth, glabrous, apices obtuse to acuminate; sterile shoot blades usually scabrous or softly puberulent adaxially. Spikelet Relugolix biological activity rachilla internodes usually sparsely hispidulous or sparsely softly puberulent; lemmas long villous on keels and marginal veins and sometimes intermediate veins, between veins glabrous or softly puberulent (sometimes densely so); palea keels and between keels sometimes puberulent. Lodicules 0.85 mm long. 2n = 56. Distribution. The subspecies occurs in North America, southwestern Canada, western USA, and in Baja California, Mexico. Ecology. Where their ranges overlap Poa fendleriana subsp. longiligula is fairly restricted to elevations below P. fendleriana subsp. fendleriana but where there is some winter snow. In Mexico this subspecies is strictly pistillate, P144 supplier apomictic, and distributed between 1300?900 m. Flowering in spring. Specimens examined. Mexico. Baja California: Hansen’s.Fendleriana and longiligula, pubescent rachilla, short truncate ligule, probably apomictic). Sierra Juarez, Hansen’s Ranch, 21 Jun 1885, C.R.Orcutt 1276a (DS, US). Chihuahua: Barranca del Cobre, SE of Creel 28 mi, N of Rio Urique crossing, ca. 7000ft [2135 m], ca. 27.507 , 107.498 , 14 Apr 1984, R.J.Soreng 2312 R.W.Spellenberg (US, population sample: 10 9 subsp. fendleriana; 1 subsp. albescens); ditto, ca. 25 mi SE Creel, ca. 27.534 , 107.508 , 2313 (US, population sample: 2). N of Basuchil, ca. 10 mi NW of Mi ca, loose crumbling red clay on dry ravine side, near ditch, plateau, arid grassland, 2200 m, 8 May 1929, Y.Mexia 2511 (CAS, MO). Tomachic, 4.2 mi E on road from La Junta to Yecora, ca. 7000 ft [2135 m], 28.375 , 107.7865 , 13 Apr 1984, R.J.Soreng 2306b R.W.Spellenberg (US, population sample: 24 subsp. fendleriana, 2n = 59; 1 subsp. albescens). S of Rancho La Consolacion, canyon in north face of Sierra Rica, 29?1-12’N, 104?-7’W, 1400-2000 m, 3 May 1973, M.C.Johnston, T.L.Wendt F.Chiang-C. 10776A (LL toward subsp.Revision of Poa L. (Poaceae, Pooideae, Poeae, Poinae) in Mexico: …albescens); ditto, 10773C (LL); ditto, 10777 (LL). Coahuila: Sierra del Carmen, south peaks of range, NW side of upper Carboneras Canyon, 28?7’N, 102?4′ W, 2100 m, 2 Apr 1974, T.Wendt 125, E.Lott D.Riskind (TEX). Municipio de Ocampo, east side of Sierra del Carmen, 28?3’N, 102?8’W, 5200 ft [1590 m], 8 May 1981, D.H.Riskind 2391 (TEX). Discussion. This is the most widespread but least common subspecies of P. fendleriana in Mexico. Staminate plants are rare or absent, except in Coahuila where a staminate plant has been collected. Poa fendleriana subsp. fendleriana intergrades with P. fendleriana subsp. albescens in Chihuahua and in southeast Arizona and southwest New Mexico.8c. Poa fendleriana subsp. longiligula (Scribn. T.A.Williams) Soreng, Great Basin Naturalist 45(3): 408. 1985. http://species-id.net/wiki/Poa_fendleriana_longiligula Fig. 8 H Poa longiligula Scribn. T.A.Williams, Circ. Div. Agrostol. U.S.D.A. 9: 3. 1899. Paneion longiligulum (Scribn. T.A. Williams) Lunell, Amer. Midl. Naturalist 4: 222. 1915. Poa fendleriana var. longiligula (Scribn. T.A.Williams) Gould, Madro 10(3): 94. 1949. Type: USA, Utah, Washington Co., Silver Reef, gravel, 3500 ft [1070 m], 3 May 1894, M.E.Jones 5149 (holotype: US-278727!; isotypes: MO!, NY-431282!, OSC!, US-922924!). Description. Leaf collars smooth to scabrous near the throat; ligules of middle cauline leaves (1.5?1.8?8 mm long, decurrent, abaxially smooth or lightly scabrous, upper margin usually smooth, glabrous, apices obtuse to acuminate; sterile shoot blades usually scabrous or softly puberulent adaxially. Spikelet rachilla internodes usually sparsely hispidulous or sparsely softly puberulent; lemmas long villous on keels and marginal veins and sometimes intermediate veins, between veins glabrous or softly puberulent (sometimes densely so); palea keels and between keels sometimes puberulent. Lodicules 0.85 mm long. 2n = 56. Distribution. The subspecies occurs in North America, southwestern Canada, western USA, and in Baja California, Mexico. Ecology. Where their ranges overlap Poa fendleriana subsp. longiligula is fairly restricted to elevations below P. fendleriana subsp. fendleriana but where there is some winter snow. In Mexico this subspecies is strictly pistillate, apomictic, and distributed between 1300?900 m. Flowering in spring. Specimens examined. Mexico. Baja California: Hansen’s.
