Penstemon parryi |
Penstemon sect. Gentianoides |
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desert penstemon, Parry's beardtongue |
gentian beardtongue |
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Habit | Herbs. | |||||||||||||||||||||||||||||||||||||||||||||||||
Stems | ascending to erect, 30–120(–160) cm, glaucous. |
glabrous, glaucous, sometimes not. |
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Leaves | glabrous, glaucous; basal and proximal cauline 36–125 × 8–25 mm, blade spatulate to oblanceolate or elliptic, base tapered, margins entire, rarely remotely and obscurely dentate, apex rounded to obtuse or acute; cauline 2–5 pairs, sessile, 23–130 × 5–25 mm, blade lanceolate to oblong, base clasping to auriculate-clasping, margins entire, rarely remotely and obscurely dentate, apex obtuse to acute. |
basal and cauline, sometimes basal few (P. subulatus), or essentially cauline (P. centranthifolius), opposite, leathery, rarely not (P. alamosensis, P. parryi), glabrous, rarely scabrous, glaucous, rarely not; basal and proximal cauline petiolate; cauline sessile or short-petiolate, blade ovate, oblanceolate, lanceolate, oblong, elliptic, linear, or linear-subulate, margins entire, rarely toothed. |
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Thyrses | interrupted, cylindric, (4–)10–60 cm, axis glabrous, verticillasters (2–)5–16, cymes 2–7-flowered; proximal bracts lanceolate, (8–)13–55 × 2–8 mm; peduncles and pedicels ascending to erect, glabrous or pedicels slightly glandular-pubescent. |
± interrupted, cylindric or ± secund, axis glabrous, rarely scabrous, cymes 2 per node, sometimes 1 per node (P. alamosensis); peduncles and pedicels spreading to ascending or erect. |
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Flowers | calyx lobes ovate to lanceolate, 3–4.6 × 1.2–2 mm, apex acute to short-acuminate, glabrous or sparsely glandular-pubescent; corolla rose pink to rose magenta, with reddish purple nectar guides, bilaterally symmetric, bilabiate, ventricose, 13–22 mm, glandular-pubescent externally, white-pilose and glandular-pubescent internally abaxially, tube 3–7 mm, throat gradually inflated, 5–7 mm diam., rounded abaxially; stamens included, pollen sacs explanate, 1.1–1.4 mm, sutures smooth; staminode 10–12 mm, flattened distally, 0.7–1(–2.5) mm diam., tip straight, distal 4–5 mm retrorsely hairy, hairs yellow or whitish, to 1 mm; style 13–15 mm. |
calyx lobes: entire or erose, ± scarious, glabrous or sparsely glandular or glandular-pubescent; corolla red, scarlet, crimson, magenta, pink, orange, lavender, violet, reddish violet, or purple, bilaterally symmetric or nearly radially symmetric, bilabiate or weakly bilabiate, not personate, salverform, tubular-salverform, or tubular-funnelform, sometimes ventricose, glabrous or glandular-pubescent to glandular externally, glabrous or glandular-pubescent internally abaxially or wholly, throat slightly to gradually inflated, not constricted at orifice, rounded or slightly 2-ridged abaxially; stamens included or longer pair reaching orifice, filaments glabrous, pollen sacs opposite, dehiscing completely, explanate, sometimes navicular, connective splitting, sides glabrous, sutures smooth, sometimes papillate; staminode included, flattened distally or ± terete, 0.1–1(–2.5) mm diam., tip straight or recurved, glabrous or distal 10–40(–70)% papillate or hairy, papillae or hairs to 1.5 mm; style glabrous. |
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Capsules | 7–9 × 4–5 mm. |
glabrous. |
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Seeds | brown to black, angled, 1–4 mm. |
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2n | = 16. |
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Penstemon parryi |
Penstemon sect. Gentianoides |
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Phenology | Flowering (Feb–)Mar–May. | |||||||||||||||||||||||||||||||||||||||||||||||||
Habitat | Rocky hillsides, washes, canyons, oak scrub and deserts. | |||||||||||||||||||||||||||||||||||||||||||||||||
Elevation | 200–1500 m. (700–4900 ft.) | |||||||||||||||||||||||||||||||||||||||||||||||||
Distribution |
AZ; Mexico (Sonora)
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w United States; n Mexico |
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Discussion | Penstemon parryi is known from the scattered desert mountain ranges of southern Arizona in Cochise, Pima, Pinal, Santa Cruz, and Yavapai counties. The species resembles P. superbus; it is distinguished by its narrow leaves and corollas that are rose pink or rose magenta, more bilaterally symmetric, and white-pilose abaxially in the throats. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Species 11 (10 in the flora). Section Gentianoides is not monophyletic. Molecular data (C. A. Wessinger et al. 2016) placed some of the species in a clade that includes sect. Coerulei and other species in a clade that includes sect. Spectabiles; still others may be allied with sect. Glabri (A. D. Wolfe et al. 2006). D. D. Keck (1937) included most of the species of sect. Gentianoides in subsect. Centranthifolii [an unpublished name] of sect. Peltanthera D. D. Keck, including Penstemon cerrosensis Kellogg, known only from Cedros Island off the west coast of Baja California, Mexico. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 17, p. 153. | FNA vol. 17, p. 150. | ||||||||||||||||||||||||||||||||||||||||||||||||
Parent taxa | Plantaginaceae > Penstemon > subg. Penstemon > sect. Gentianoides | Plantaginaceae > Penstemon > subg. Penstemon | ||||||||||||||||||||||||||||||||||||||||||||||||
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Synonyms | P. puniceus var. parryi | |||||||||||||||||||||||||||||||||||||||||||||||||
Name authority | (A. Gray) A. Gray: in A. Gray et al., Syn. Fl. N. Amer. 2(1): 264. (1878) — (as Pentstemon) | G. Don: Gen. Hist. 4: 640. (1837) — (as Pentstemon) | ||||||||||||||||||||||||||||||||||||||||||||||||
Web links |