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Penstemon navajoa

(Navajo Mountain Beardtongue)

Overview

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Critically Endangered
Threat status

Common Names

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Common Names in English:

Beardtongue, Navajo Beardtongue, Navajo Mountain Beardtongue

Description

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Family Scrophulariaceae

Herbs, sometimes shrubs , rarely trees ; mostly autotrophic, less often hemiparasitic or parasitic. Stipules absent. Leaves alternate, opposite, whorled , or basally opposite and apically alternate, simple or sometimes pinnately dissected . Inflorescences racemes , spikes, or thyrsoid panicles, determinate or indeterminate, or flowers solitary. Flowers perfect , usually zygomorphic, rarely actinomorphic . Calyx often persistent , (2-) 4- or 5-lobed or -parted, variously connate . Corolla sympetalous ; limb (3 or) 4- or 5-lobed, often 2-lipped. Stamens mostly 4, didynamous , sometimes 1 or 2 staminodes present, less often 2 or 5 stamens; anther locules 1 or 2, equal or subequal , free or confluent . Nectary often present at base of ovary, ringlike, cupular, or reduced to a gland . Ovary superior, 2-loculed, rarely apically 1-loculed; ovules numerous , rarely 2 per locule, on axile placentas, anatropous or hemitropous . Style simple; stigma capitate, 2-lobed, or 2-lamellate. Fruit a capsule, septicidal , loculicidal, or septifragal, sometimes opening by pores or irregularly dehiscent , rarely a berry. Seeds minute or rarely conspicuous , sometimes winged ; testa often reticulate ; hilum lateral or ventral; endosperm fleshy or absent; embryo straight or curved .

About 220 genera and 4500 species: cosmopolitan ; 61 genera (seven endemic) and 681 species (415 endemic) throughout China but with a greater concentration in SW China.[1]

Physical Description

Habit: Forb/herb

Flowers: Bloom Period: June. • Flower Color: medium blue

Size/Age/Growth

Size: 6-12" tall.

Biology

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Reproduction

Duration: Perennial

Growth

Culture: Space 12-15" apart.

Soil: Minimum pH: 6.6 • Maximum pH: 8.5

Sunlight: Sun Exposure: Full Sun .

Moisture: Drought Tolerance: High

Temperature: Cold Hardiness: 6a, 6b, 7a, 7b, 8a, 8b. (map)

Taxonomy

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Notes

Name Status: Accepted Name . Latest taxonomic scrutiny: 15-Mar-2000

Similar Species

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Members of the genus Penstemon

ZipcodeZoo has pages for 1494 species, subspecies, varieties, forms, and cultivars in this genus. Here are just 100 of them:

P. 'Abberley' · P. 'Abbeydore' · P. 'Abbotsmerry' · P. abietinus (Firleaf Beardtongue) · P. aboriginium · P. aboriginum · P. absarokensis (Absaroka Range Beardtongue) · P. acaulis (Stemless Beardtongue) · P. acuminatus (Sanddune Beardtongue) · P. acuminatus f. roseus · P. acuminatus var. acuminatus (Sharpleaf Penstemon) · P. acuminatus var. latebracteatus (Sharpleaf Penstemon) · P. acuminatus var. minor · P. adamsianus · P. aggregatus · P. 'Agnes Laing' · P. alamosensis (Los Alamos Beardtongue) · P. albertinus (Alberta Beardtongue) · P. albidum · P. albidus (White-Flower Beardtongue) · P. albifloris · P. albifluvis · P. albomarginalis · P. albomarginatus (White-Margin Beardtongue) · P. albrightii · P. 'Alice Hindley' · P. 'Alice Howarth' · P. alluviorum (Lowland Beardtongue) · P. alpinus · P. alpinus alpinus · P. alpinus brandegei · P. alpinus magnus var. glaber · P. alpinus nagnus · P. alsinoides · P. amabilis · P. ambiguus (Pink Plains Beardtongue) · P. ambiguus var. ambiguus (Gilia Beardtongue) · P. ambiguus var. foliosus · P. ambiguus var. laevissimus (Pink Plains Beardtongue) · P. ambiguus var. thurberi · P. ammophilus (Canaan Mountain Beardtongue) · P. amphorellae · P. amplexicaulis · P. amplus · P. 'Amy Gray' · P. 'Andenken an Friedrich Hahn' · P. angelicus · P. anguineus (Siskiyou Beardtongue) · P. angustifolius (Broad-Beard Beardtongue) · P. angustifolius caudatus · P. angustifolius var. angustifolius (Broad-Beard Beardtongue) · P. angustifolius var. caudatus (Broadbeard Beardtongue) · P. angustifolius var. dulcis (Broadbeard Beardtongue) · P. angustifolius var. venosus (Broadbeard Beardtongue) · P. angustifolius var. vernalensis (Vernal Narrow-Leaf Penstemon) · P. antirrhinoides · P. antirrhinoides microphyllus · P. apateticus · P. apateticus durangensis · P. apateticus f. triphyllus · P. 'Apple Blossom' (Border Penstemon) · P. arenarius (Nevada Sanddune Beardtongue) · P. arenicola (Red Desert Beardtongue) · P. aridus (Stiff-Leaf Beardtongue) · P. arizonicus · P. arkansanus (Arkansas Beardtongue) · P. arkansanus pubescens · P. 'Artist White Bell' · P. 'Ashton' · P. 'Astley' · P. attenuatus (Taper-Leaf Beardtongue) · P. attenuatus f. multicolor · P. attenuatus hyacinthinus · P. attenuatus militaris var. militaris · P. attenuatus pseudoprocerus var. pseudoprocerus · P. attenuatus typicus · P. attenuatus var. attenuatus (Sulphur Penstemon) · P. attenuatus var. glabratus · P. attenuatus var. hyacinthinus · P. attenuatus var. militaris (Taper-Leaved Beardtongue) · P. attenuatus var. palustris (Sulphur Beardtongue) · P. attenuatus var. varians · P. atwoodii (Kaiparowits Beardtongue) · P. 'Audrey Cooper' · P. auriberbis (Colorado Beardtongue) · P. auricomus · P. austinii · P. australis (Eustis Lake Beard Tongue) · P. australis f. odontophyllus · P. 'Axe Valley Jessica' · P. 'Axe Valley Mabel Alice' · P. 'Axe Valley Penny Mitchell' · P. 'Axe Valley Pixie' · P. 'Axe Valley Suzie' · P. azureus (Sky Blue Beardtongue) · P. azureus ambiguus · P. azureus angustissimus (Small Penstemon) · P. azureus angustissimus var. angustissimus · P. azureus azureus (Small Azure Beardtongue) · P. azureus f. jaffrayanus

More Info

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Further Reading

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Notes

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Contributors

Data Sources

Accessed through GBIF Data Portal February 03, 2008:

Identifiers

Footnotes

  1. Deyuan Hong, Hanbi Yang, Cun-li Jin, Manfred A. Fischer, Noel H. Holmgren & Robert R. Mill "Scrophulariaceae". in Flora of China Vol. 18 Page 1. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org. [back]
Last Revised: 7/2/2009