Difference between revisions of "Baccharis bigelovii"
in W. H. Emory, Rep. U.S. Mex. Bound. 2(1): 84. 1859.
FNA>Volume Importer |
imported>Volume Importer |
||
| (5 intermediate revisions by 2 users not shown) | |||
| Line 1: | Line 1: | ||
{{Treatment/ID | {{Treatment/ID | ||
|accepted_name=Baccharis bigelovii | |accepted_name=Baccharis bigelovii | ||
| − | |accepted_authority=A. Gray | + | |accepted_authority=A. Gray |
|publications={{Treatment/Publication | |publications={{Treatment/Publication | ||
|title=in W. H. Emory, Rep. U.S. Mex. Bound. | |title=in W. H. Emory, Rep. U.S. Mex. Bound. | ||
| Line 33: | Line 33: | ||
-->{{#Taxon: | -->{{#Taxon: | ||
name=Baccharis bigelovii | name=Baccharis bigelovii | ||
| − | + | |authority=A. Gray | |
| − | |authority=A. Gray | ||
|rank=species | |rank=species | ||
|parent rank=genus | |parent rank=genus | ||
| Line 48: | Line 47: | ||
|publication year=1859 | |publication year=1859 | ||
|special status= | |special status= | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V20_10.xml |
|tribe=Asteraceae tribe Astereae | |tribe=Asteraceae tribe Astereae | ||
|genus=Baccharis | |genus=Baccharis | ||
Latest revision as of 19:57, 5 November 2020
Shrubs, 30–100 cm (branched from bases). Stems erect to ascending, slender, striate-angled, glabrous, resinous. Leaves present at flowering; short-petiolate; blades (1- or obscurely 3-nerved) obovate to oblanceolate, 20–35 × 3–15 mm, distally reduced and narrowed, bases cuneate, margins irregularly incised to coarsely serrate or 2-serrate, faces glabrous, gland-dotted, resinous. Heads (20–50) in corymbiform arrays. Involucres campanulate; staminate 4–5 mm, pistillate 4–5 mm. Phyllaries lanceolate, 1–4 mm, margins scarious, medians green, apices acute, erose. Staminate florets 15–20; corollas 3.5–4 mm. Pistillate florets 25–30; corollas 2–2.6 mm. Cypselae 1.5–2.2 mm, 5-nerved, glabrous; pappi 3–4.5 mm.
Phenology: Flowering Aug–Nov.
Habitat: Dry rocky ground in coniferous forests
Elevation: 1300–2000 m
Distribution
Ariz., N.Mex., Tex., Mexico (Chihuahua, Durango, Sonora).
Discussion
Baccharis bigelovii occurs in the general Chihuahuan Desert region in the Davis Mountains of West Texas, and in the Chiricahua and Huachuca mountains of Arizona. It is recognized by the relatively short stature, obovate, coarsely and irregularly serrate leaves, erose-ciliate phyllaries, and 5-nerved cypselae. It is similar to B. thesioides, which differs mainly by having narrower, more oblong leaves with more evenly serrate margins and spinulose teeth. Further investigation may show these two taxa to be different geographic expressions of a single species centered in Mexico.
Selected References
None.