Difference between revisions of "Penstemon sect. Chamaeleon"
Sida 2: 339. 1966.
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--><p>Crosswhite circumscribed sect. Chamaeleon to include a group of southern species distinguished by incompletely dehiscent pollen sacs with prominently denticulate sutures. <i>Penstemon</i> punctatus Brandegee, a species not treated by Crosswhite, might belong here; the only specimens of that species seen were from Coahuila, Mexico.</p> | --><p>Crosswhite circumscribed sect. Chamaeleon to include a group of southern species distinguished by incompletely dehiscent pollen sacs with prominently denticulate sutures. <i>Penstemon</i> punctatus Brandegee, a species not treated by Crosswhite, might belong here; the only specimens of that species seen were from Coahuila, Mexico.</p> | ||
|tables= | |tables= | ||
| − | |references= | + | |references={{Treatment/Reference |
| + | |id=crosswhite1966a | ||
| + | |text=Crosswhite, F. S. 1966. Revision of Penstemon section Chamaeleon (Scrophulariaceae). Sida 2: 339–346. | ||
| + | }} | ||
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|family=Plantaginaceae | |family=Plantaginaceae | ||
|distribution=sw United States;Mexico. | |distribution=sw United States;Mexico. | ||
| − | |reference= | + | |reference=crosswhite1966a |
|publication title=Sida | |publication title=Sida | ||
|publication year=1966 | |publication year=1966 | ||
|special status= | |special status= | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V17/V17_287.xml |
|genus=Penstemon | |genus=Penstemon | ||
|subgenus=Penstemon subg. Penstemon | |subgenus=Penstemon subg. Penstemon | ||
Latest revision as of 19:31, 5 November 2020
Herbs. Stems retrorsely hairy or puberulent, sometimes glandular-pubescent distally or glabrescent, not glaucous. Leaves basal and cauline, basal usually absent at anthesis, opposite, leathery or not, glabrous, puberulent, or retrorsely hairy, not glaucous; basal and proximal cauline petiolate, sometimes short-petiolate or sessile (P. dasyphyllus); cauline sessile, sometimes short-petiolate (P. lanceolatus), blade lanceolate or linear, margins entire. Thyrses interrupted, ± secund to cylindric, axis glandular-pubescent or glabrous, cymes 1 or 2 per node; peduncles and pedicels ascending to erect. Flowers: calyx lobes: margins entire or erose (P. stenophyllus), herbaceous or narrowly scarious, sometimes broadly scarious (P. stenophyllus), glandular-pubescent or glabrous; corolla lavender to blue, violet, purple, red, or scarlet, bilaterally symmetric, bilabiate, not personate, ventricose or tubular-funnelform, glandular-pubescent externally, glabrous or glandular-pubescent internally abaxially, throat abruptly or gradually inflated, not constricted at orifice, rounded to 2-ridged abaxially; stamens included to exserted, filaments glabrous, pollen sacs parallel to divergent, navicular to slightly saccate, dehiscing completely or incompletely, distal 1/5 or less sometimes indehiscent, connective splitting, sides glabrous, sutures denticulate, teeth to 0.2–0.3 mm; staminode included or exserted, flattened distally, 0.3–2.6 mm diam., tip recurved, glabrous; style glabrous. Capsules glabrous. Seeds brown to dark brown, angled, 1.9–3.2 mm.
Distribution
sw United States, Mexico.
Discussion
Species 4 (3 in the flora).
Crosswhite circumscribed sect. Chamaeleon to include a group of southern species distinguished by incompletely dehiscent pollen sacs with prominently denticulate sutures. Penstemon punctatus Brandegee, a species not treated by Crosswhite, might belong here; the only specimens of that species seen were from Coahuila, Mexico.
Selected References
Key
| 1 | Corollas scarlet to red, tubular-funnelform, glandular-pubescent internally abaxially. | Penstemon lanceolatus |
| 1 | Corollas violet to blue, lavender, or purple, ventricose, glabrous internally. | > 2 |
| 2 | Thyrse axes glandular-pubescent. | Penstemon dasyphyllus |
| 2 | Thyrse axes glabrous. | Penstemon stenophyllus |