Description
Plants herbaceous or woody only at the base, leaves small, needlelike, linear or broader, less than 35 mm long. The corollas are red, 25-32 mm long, tubular, strongly bilabiate; the inflorescence is secund, glandular; the anthers are explanate, glabrous; the staminode bearded most of length with bright yellow hairs; base of lower lobes with long, flat, yellow hairs (Allred and Ivey 2012, Bleakly 1998).
Diagnostic Characteristics
Penstemon pinifolius plants are herbaceous or woody only at the base, the leaves are less than 35 mm long, needlelike, linear or broader, and crowded at the lower part of the stem. The tubular corollas are red or orange-red (on some plants yellow), 25-32 mm long (Allred and Ivey 2012, Bleakly 1998).
Habitat
Penstemon pinifolius grows in rocky areas in mountains and foothills (Allred and Ivey 2012). In the Sierra Madre Occidental, it occurs in oak woodlands, oak-pine woodlands, pine-oak-juniper woodlands, and mixed conifer forests associated with Pseudotsuga, Pinus, Robinia, Chenopodium graveolens, Galium, Aguilegia, Oxalis, Thalictrum, and Artemisia (SEINet 2018). In SW New Mexico and SE Arizona it occurs in canyons, on dry mountainsides, rocky cliffs, outcrops, ledges and summits, rocky roadsides, in montane conifer forests (Spruce, Fir, Douglas-fir), mixed forests, Ponderosa pine-oak forests, Ponderosa pine woodlands, and riparian forests. Associated species include Pinus ponderosa, Pinus strobiliformis, Pinus cembroides, Pinus edulis, Cupressus arizonica, Juniperus deppeana, Quercus rugosa, Quercus gambelii, Populus tremuloides, Platanus wrightii, Agave parryi, Juglans, Cercocarpus, Fendlera, Philadelphus argenteus,Commelina dianthifolia, Oxalis, Saxifraga, Echinercereus, Arabis perennans, Bahia dissecta, Bouteloua curtipendula, Cheilanthes wootoni, Eriogonum jamesii, Milla biflora, Comandra pallida, Heuchera, Agave parryi, Senecio eremophilus ssp. macdougalii, Silene laciniata, Erysimum capitatum, Acer glabrum, Vitis arizonica, and Acer negundo (SEINet 2018).