Difference between revisions of "Chionophila"
in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 10: 331. 1846.
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|accepted_name=Chionophila | |accepted_name=Chionophila | ||
| − | |accepted_authority=Bentham | + | |accepted_authority=Bentham |
|publications={{Treatment/Publication | |publications={{Treatment/Publication | ||
| − | |title=Prodr. | + | |title=in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. |
|place=10: 331. 1846 | |place=10: 331. 1846 | ||
|year=1846 | |year=1846 | ||
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name=Chionophila | name=Chionophila | ||
|author=Craig C. Freeman | |author=Craig C. Freeman | ||
| − | |authority=Bentham | + | |authority=Bentham |
|rank=genus | |rank=genus | ||
|parent rank=family | |parent rank=family | ||
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|distribution=w United States. | |distribution=w United States. | ||
|reference=None | |reference=None | ||
| − | |publication title=Prodr. | + | |publication title=in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. |
|publication year=1846 | |publication year=1846 | ||
|special status=Endemic | |special status=Endemic | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V17/V17_178.xml |
|genus=Chionophila | |genus=Chionophila | ||
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-->[[Category:Treatment]][[Category:Plantaginaceae]] | -->[[Category:Treatment]][[Category:Plantaginaceae]] | ||
Revision as of 19:30, 5 November 2020
Herbs, perennial; caude× woody or herbaceous. Stems erect, glabrous or puberulent. Leaves basal and cauline, cauline smaller, opposite, sometimes alternate distally; petiole present or absent; blade not fleshy, ± leathery or not, margins entire. Inflorescences terminal, spikelike, secund racemes; bracts present. Pedicels present or absent; bracteoles absent. Flowers bisexual; sepals 5, proximally connate, caly× radially symmetric, cylindric to funnelform, lobes triangular to narrowly ovate; corolla greenish white, creamy white, or pale lavender, bilaterally symmetric, bilabiate, tubular-funnelform, tube base not spurred or gibbous, throat not densely pilose internally, lobes 5, abaxial 3, adaxial 2; stamens 4, proximally adnate to corolla, didynamous, filaments glabrous; staminode 1, ± filiform; ovary 2-locular, placentation axile; stigma capitate. Fruits capsules, dehiscence septicidal. Seeds 10–20, tan or brown, ellipsoid to fusiform or ellipsoid-disciform, wings present. x = 8.
Distribution
w United States.
Discussion
Species 2 (2 in the flora).
Chionophila shares morphological similarities with Penstemon, most notably an epistaminal nectary of glandular hairs. Both have a base chromosome number of eight. R. M. Straw (1966) hypothesized that they are sister taxa. Relationships among genera in Cheloneae remain equivocal (A. D. Wolfe et al. 1997, 2002, 2006; S. L. Datwyler and Wolfe 2004). Chionophila is distinguished from Penstemon by a more prominent caly× tube, spikelike racemes, prominently winged seeds, and absence of bracteoles.
Selected References
None.
Lower Taxa
Key
| 1 | Verticillasters continuous; caly× tubes 8–9 mm. | Chionophila jamesii |
| 1 | Verticillasters interrupted; caly× tubes 1–2 mm. | Chionophila tweedyi |