Reyna, Saarela & Peterson & Valdés-Reyna, 2014

Saarela, Jeffery M., Peterson, Paul M. & Valdés-Reyna, Jesus, 2014, A taxonomic revision of Bromus (Poaceae: Pooideae: Bromeae) in México and Central America, Phytotaxa 185 (1), pp. 1-147 : 101-103

15. Bromus lanatipes (Shear) Rydberg (1906: 52) . Fig. 50 , 51 .

Basionym: Bromus porteri var. lanatipes Shear (1900: 37) . Bromus anomalus var. lanatipes (Shear) Hitchcock (1933: 449) . Bromopsis lanatipes (Shear) Holub (1973: 168) . Type:— UNITED STATES OF AMERICA. Colorado: Idaho Springs, 27 August 1895, C.L. Shear 739 ( holotype US-81588!, isotype RM-150554!).

Plants perennial, not rhizomatous. Culms to 120 cm tall, (1–) 2–3 mm wide at base, glabrous or pubescent below inflorescences; nodes 3–4, light to dark brown, pubescent. Leaf sheaths lanate, occasionally densely pilose, hairs up to 1.2 mm long; auricles absent; ligules 0.5–1.5 mm long, glabrous; blades up to 22 cm × 4–7 mm, flat, adaxial and abaxial surfaces glabrous or minutely pubescent, margins serrulate. Panicles 16–20 cm × 2–8 cm, open, nodding, branches ascending to spreading, shorter or longer than spikelets, scabrous, 1–4 spikelets per branch. Spikelets 1.7–3 cm long, florets 7–9-flowered, elliptic to lanceolate, terete to moderately laterally compressed; glumes glabrous, pubescent along margins or pubescent throughout, margins hyaline, midnerves glabrous or scabrous; lower glumes 4–6 mm long, lanceolate, 1-nerved, green along the nerve, apices acute; upper glumes 6.5–8 mm long, obovate-lanceolate, 3-nerved, green along and between the nerves, apices acute or mucronate, mucros up to 1 mm long; lemmas 8–10 mm × 1–2 mm, elliptic to lanceolate, rounded over the backs, apices truncate, 5-7-nerved, green along and between the nerves, densely pubescent or hairs restricted to margins, marginal hairs sometimes longer than those on back, hairs up to 0.6 mm long; awns 2–6.5 mm long, arising 0–0.5 mm below lemma apex, straight; paleas usually equal in length to the lemma, 7–10 mm long, backs pubescent, keels ciliate, cilia up to 0.2 mm long; anthers 2–4 mm long; caryopses 6−7 mm long, light brown. 2 n = 28 ( Wagnon 1952, Ward & Spellenberg 1988).

ATAXONOMIC REVISION OF BROMUS (POACEAE)

Phytotaxa 185 (1) © 2014 Magnolia Press 101

Distribution: ―Native. Bromus lanatipes is known only from northern Coahuila in México, near the United States border ( Fig. 52 ). In the United States its range includes western Texas, New México, Arizona, Nevada, Utah, Colarado and Wyoming ( Pavlick & Anderton 2007).

Ecology: — Bromus lanatipes is found along ridgetops and steep slopes; associated with Pinus spp. , Abies , Pseudotsuga menziesii , Quercus spp. , Juniperus , Cupressus arizonica , Arbutus , Salvia , Salix Linnaeus (1753: 1753) , Rhamnus and Ceanothus . Elevation: 1676–2627 m.

Common Names: ―Woolly brome, shaggy brome (English); bromo veluludo (Spanish).

Comments: ― Bromus lanatipes is distinguished by its lanate lower sheaths. Aphotograph of this character is given in Allred (1993: 334). Circumscribing this taxon required examination of material from the adjacent United States, which is cited below.

Specimens Examined:― MÉXICO. Coahuila: ca. 12 (air) mi Eof Boquillas in Sierra del Carmen , 10.4 (rd) mi NW of Rancho El Jardín, 29.2°N, 102.23°W, 5650 ft [ 1722 m], J . Henrickson 11512 ( RSA-POM-664819 ); ca. 12 (air) mi Eof Boquillas , 8.3 (rd) mi NW of Rancho El Jardín, 29.1667°N, 102.23°W, 5500 ft [ 1676 m], 27 July 1973, J . Henrickson 11487 ( RSA-POM-665612 ); Maderas del Carmen , 12.2 mi NW of Pilares near "old cabin", 28.9401°N, 102.5978°W, 2300 m, 7 September 2005, P. M . Peterson & J . Valdés-Reyna 18889 ( ANSM, CAN, MO, US); Maderas del Carmen, 16.3 mi NE of Los Pilares on road towards Campo Dos , 28.9626°N, 102.5643°W, 2235 m, 21 September 2007, P. M . Peterson, J. M . Saarela, S . Lara Contreras & J . Reyna Álvarez 20983 ( CAN, MO, P- 03216868 , US); Maderas del Carmen, 17.7 mi NE of Los Pilares on road towards Campo Dos , 28.9645°N, 102.56°W, 1954 m, 21 September 2007, P. M . Peterson, J. M . Saarela, S . Lara Contreras & J . Reyna Álvarez 21010 ( CAN, MO, US); Sierra El Jardín, 29.0832°N, 102.6371°W, 2100 m, 3 September 2006, P. M . Peterson & S . Lara- Contreras 19938 ( CAN, MO, US); Madera del Carmen, at Campo Dos , 29.0106°N, 102.6083°W, 2627 m, 16 September 2012, P. M . Peterson & K . Romaschenko 24531 ( US) . UNITED STATES OF AMERICA. Arizona: Navajo Indian Reservation, about the Nend of the Carizo Mtns., 29 July 1911, P.C. Standley 7386 ( US-686353 ); Cococino Co., 30 mi Eof Canyon Padre, Flagstaff , 7–11 August 1915, A. S . Hitchcock 13243 ( US-906049 ) ;

102 Phytotaxa 185 (1) © 2014 Magnolia Press

SAARELA ET AL. ATAXONOMIC REVISION OF BROMUS (POACEAE)

Phytotaxa 185 (1) © 2014 Magnolia Press 103 Cochise Co., Huachuca Mtns. , September 1893, J. G . Lemmon s.n. ( US, 2 sheets); Dos Cabezos, 31 October 1937, L. N . Goodding s.n. ( US-1721928 ). New México: Gray’s Peak , 6500 ft, F. S . Earle 162 ( US-1008675 ); Grant Co., about the S end of the Black Range , 6000 ft, 1904, O. B . Metcalfe s.n. ( US-690339 ); Santa Fe Co., Glorieta , 2 July 1926, A. S . Hitchcock 22994 ( US-1296512 ); Glorieta , 24 August 1910, E. O . Wooton s.n. ( US-726304 ); Santa Fe, 3 July 1926, A. S . Hitchcock 23011 ( US-1296516 ); Santa Fe, 1884, G . Vasey s.n. ( US-1008802 ); Lincoln Co., Gray , 6000–6500 ft, July 1900, F. S . Earle & E. S . Earle 162 ( US-382342 ); Ft. Stanton on El Paso road, 3 August 1937, L. N . Goodding 3514 ( US-1723783 ); between Ft. Stanton and Ruidoso , 26 August 1937, L. N . Gooding & C . Goodding 3519 ( US-1723785 ); San Miguel Co., Las Vegas , 23 June 1891, L. H . D. s.n. ( US-749847 ); vicinity of Las Vegas , 27 June 1928, G. E . Osterhout 7048 ( US-1389144 ). Oklahoma: Cimarron Co., Mesa de Maya (Black Mesa), 3 mi Nof Kenton, 9 July 1947, C. M . Rogers 4747 ( US-2010965 ); Nslopes of Black Mesa , 3 mi Nof Kenton, 30 May 1952, U.T. Waterfall 10749 ( US-2077766 ). Texas: Guadalupe Mts., 1881, [?] s.n. ( US-132953 ); Brewster Co., Chisos Mtns. , Green Gulche , below Casa Grande , 26 August 1944, C. L . Lundell 13222 ( US- 1913218 ); Jeff Davis Co., Sawtooth Mountain, Davis Mountains , 3 October 1926, E. J . Palmer 31833 ( US- 1297432 ); Trans-Peco Texas, Davis Mtns. , High Mt. Livermore, 22 July 1936, L. C . Hinckley 607a ( US-1871685 ); Uvalde Co., Black Mt. , 13 August 1926, B. C . Tharp 4105 ( US-1296999 ) .

Figures

FIGURE 50. Bromus lanatipes. A. Lemma. B. Inflorescence. C. Spikelet. Illustration by C.T. Roché, reproduced from Barkworth et al. (2007) with permission.

FIGURE 51. Bromus lanatipes. Peterson & Lara-Contraras 19938 (CAN, unmounted).

FIGURE 52. Geographical distribution of Bromus lanatipes in México.