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Vascular Plants of California
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Penstemon rattanii


Higher Taxonomy
Family: PlantaginaceaeView DescriptionDichotomous Key
Common Name: PLANTAIN FAMILY
Habit: Annual to shrub, some aquatic. Leaf: basal or cauline, alternate or opposite (whorled), simple, entire to dentate or lobed, venation generally pinnate; stipules 0. Inflorescence: raceme, spike, or flowers axillary in 1--few-flowered clusters; flowers few to many, each subtended by 1 bract. Flower: unisexual or bisexual, radial or bilateral; sepals 4--5, generally fused at base; corolla 4--5-lobed, scarious or not, persistent or not, generally 2-lipped, upper lip generally 2-lobed, lower generally 3-lobed, spur present or not, tube sac-like at base or not; stamens 2 or 4, alternate corolla lobes, epipetalous, staminode 0 or 1--2, anthers opening by 2 slits; ovary superior, [1]2--4-chambered, style 1, stigma lobes 0 or 2. Fruit: generally a capsule, septicidal, loculicidal, circumscissile, or dehiscing by terminal slits or pores.
Genera In Family: +- 110 genera, +- 2000 species: worldwide, especially temperate. Note: Veronicaceae sensu Olmstead et al. Recently treated to include Callitrichaceae, Hippuridaceae, and most non-parasitic California genera of Scrophulariaceae (except Buddleja, Diplacus, Erythranthe, Limosella, Lindernia, Mimetanthe, Mimulus, Myoporum, Scrophularia, Verbascum). California Maurandya moved to Holmgrenanthe and Maurandella. Mohavea moved to Antirrhinum. Limnophila ×ludoviciana Thieret an occasional agricultural weed in rice fields. Hebe ×franciscana (Eastw.) Souster, Hebe speciosa (R. Cunn.) Andersen only cultivated.
eFlora Treatment Author: Margriet Wetherwax, except as noted
Scientific Editor: Robert W. Patterson, Bruce G. Baldwin.
Genus: PenstemonView DescriptionDichotomous Key


Common Name: BEARDTONGUE
Habit: Perennial herb to shrub. Leaf: generally opposite, entire to toothed; distal sessile. Inflorescence: panicle, raceme, cyme, or flowers in whorls; bracts generally small. Flower: calyx lobes 5, +- equal; corolla tube +- cylindric or lower side expanded, +- 2-lipped, generally pink or blue to purple (some red, yellow, or white), upper lip 2-lobed, external in bud; stamens 4, filament bases glabrous, attached to corolla at different levels, anther sacs 2, valves generally spreading +- flat at dehiscence; staminode attached near base of corolla tube, well developed, generally hairy adaxially; nectaries 2, at bases of upper stamens; stigma unlobed. Fruit: septicidal and sometimes also loculicidal at tip. Seed: generally many, irregularly angled.
Etymology: (Latin & Greek: almost thread, from stamen-like staminode) Note: Largest genus of flower plants endemic to North America. Penstemon subglaber, Penstemon strictus may persist in SNH, from commercial wildflower seed mixes or plantings; both native to Rocky Mountains.
eFlora Treatment Author: Margriet Wetherwax & Noel H. Holmgren
Reference: Wolfe et al. 2006 Amer J Bot 93:1699--1713
Unabridged Reference: Holmgren 1984 In Cronquist et al. Intermountain Flora 4:370--457
Penstemon rattanii A. Gray
NATIVE
Habit: Perennial herb 25--120 cm; herbage +- glabrous. Leaf: main cauline leaves thin, 25--140 mm, narrowly elliptic, slightly narrowed just distal to rounded to truncate base (where widest), shallowly toothed, +- = basal. Inflorescence: glandular. Flower: corolla 20--30 mm, abruptly expanded to throat, generally on upper side, blue-violet, +- white within, glandular outside, floor +- hairy; anther sacs 1.3--1.7 mm, dehiscing full length, valves barely spreading; staminode yellow-hairy. Chromosomes: 2n=16.

Jepson eFlora Author: Margriet Wetherwax & Noel H. Holmgren
Reference: Wolfe et al. 2006 Amer J Bot 93:1699--1713
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

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Citation for this treatment: Margriet Wetherwax & Noel H. Holmgren 2012, Penstemon rattanii, in Jepson Flora Project (eds.) Jepson eFlora, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=37072, accessed on April 16, 2024.

Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on April 16, 2024.

Penstemon rattanii  
var. kleei
click for enlargement
©2022 Dylan Neubauer
Penstemon rattanii  
var. kleei
click for enlargement
©2022 Dylan Neubauer
Penstemon rattanii
click for enlargement
©2012 Gary A. Monroe
Penstemon rattanii  
var. kleei
click for enlargement
©2016 Dylan Neubauer
Penstemon rattanii  
var. rattanii
click for enlargement
©2013 Dana York

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Geographic subdivisions for Penstemon rattanii:
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map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).





 

Data provided by the participants of the  Consortium of California Herbaria.
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Blue markers indicate specimens that map to one of the expected Jepson geographic subdivisions (see left map). Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time (fruiting time in some monocot genera).