Contributions from the United States National Herbarium . mis with scattered hairs, thehairs mm long. Observations.—Festuca vaginalis is morpho-logically distinct from the other species treatedin this revision and we do not know which spe-cies might be its closest sister. Festuca vaginalishas been mentioned as occurring in Ecuadorand Colombia (Luteyn 1999, Rangel 2000);although its occurrence in Colombia has not beenconfirmed. Distribution and habitat.— Festuca vaginalisis endemic to Ecuador. It occurs on volcanic rocksin superparamos and dry grass paramos between3500-5000 m. It als
Contributions from the United States National Herbarium . mis with scattered hairs, thehairs mm long. Observations.—Festuca vaginalis is morpho-logically distinct from the other species treatedin this revision and we do not know which spe-cies might be its closest sister. Festuca vaginalishas been mentioned as occurring in Ecuadorand Colombia (Luteyn 1999, Rangel 2000);although its occurrence in Colombia has not beenconfirmed. Distribution and habitat.— Festuca vaginalisis endemic to Ecuador. It occurs on volcanic rocksin superparamos and dry grass paramos between3500-5000 m. It also has spread secondarily ontodisturbed areas of dry grass paramos and along roadembankments, so called arenal. KEY TO THE SUBSPECIES OF FESTUCA VAGINALIS la. Culms 30-60 cm long, robust; leaf blades ca. mm wide; panicles whitish or 56a. F. vaginalis subsp. vaginalis lb. Culms 20-30 cm tall, not robust; leaf blades () mm wide; panicles pale-green 56b. F. vaginalis subsp. cayambae 144 Festuca in South American Paramos. Figure 71. Festuca vaginalis subsp. vaginalis A. & B. Habit. C. Ligule. D. Spikelet. E. Glumes. F. Lemma. G. Lemma with paleaand rachilla. H. Leaf blade cross-section. A-H, Stancik 3134 (COL). Festuca in South American Paramos 145 56A. Festuca vaginalis subsp. vaginalis (Fig. 71). Culms 30-60 cm long, robust. Leaf blades mm wide. Panicles whitish or purplish-white. Leaf blade anatomy.—Cross-sections with9-11 vascular bundles. Additional specimens examined. ECUA-DOR. Bolivar: Volcan Chimborazo, W side,1°28S, 78°48W, 4800 m, 14 Sep 1995, Sklendf& Kosteckovd 143-2 (QCNE); road Salinas-LosArenales, km 6, 01°22S, 79°00W, 4000 m, 55327 (AAU); valley 4 km S of Crucesde los Arenales, 4270^1300 m, 3 Mar 1992, S. Lae-gaard 101559 (AAU, QCA); 01°25S, 78°54W,4160-4200 m, S Laegaard 101495 (AAU); SW of Ambato on Hwy to Guaranda and road Fecundo Vela, km km, 4290 m, 03May 1990, Peterson 8987 &
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbotany, bookyear1890
