Gundlachia triantha

(S. F. Blake) Urbatsch & R. P. Roberts

Sida 21: 248. 2004.

Common names: TransPecos goldenshrub
Illustrated
Basionym: Haplopappus trianthus S. F. Blake J. Wash. Acad. Sci. 28: 485. 1938
Synonyms: Ericameria triantha (S. F. Blake) Shinners Xylothamia triantha (S. F. Blake) G. L. Nesom
Treatment appears in FNA Volume 20. Treatment on page 85.
Revision as of 20:28, 29 July 2020 by imported>Volume Importer
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Stems terete, finely sulcate, highly branched, bark tan becoming gray, twigs mostly green, minutely ridged, papillate-scabrous. Leaves ascending to spreading, sulcate adaxially, 5–20 × 0.5–1 mm; axillary fascicles sometimes present. Phyllaries 3–6 × 0.8–1.5 mm, mostly chartaceous, midveins enlarged distally, evident as green to brown patches, apices acute. Disc corollas 5–6 mm, tubes glabrous or puberulent, lobes 1–2.5 mm; style-branches 2–2.5 mm, appendages 1.2–1.5 mm. Cypselae 3–4 mm, hairy; pappi 4–6 mm. 2n = 18.


Phenology: Flowering late summer–fall (or with adequate rain).
Habitat: Often in gypseous, calcareous, saline, or gravelly soils
Elevation: 700–1500 m

Distribution

V20-162-distribution-map.gif

Tex., Mexico (Chihuahua), Mexico (Coahuila), Mexico (Durango), Mexico (Nuevo León)

Discussion

Selected References

None.

Lower Taxa

None.

"[" is not declared as a valid unit of measurement for this property."]" is not declared as a valid unit of measurement for this property.

... more about "Gundlachia triantha"
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
racemiform +  and cymiform +
indeterminate +  and determinate +
Lowell E. Urbatsch +, Roland P. Roberts +  and Kurt M. Neubig +
(S. F. Blake) Urbatsch & R. P. Roberts +
tan becoming gray +
decurrent +
Haplopappus trianthus +
compound +  and simple +
filiform +
rugulose +  and muricate +
tan +  and whitish +
TransPecos goldenshrub +
not 2-lipped +  and actinomorphic +
beaked +, 2-ribbed +  and 5-ribbed +
5 +  and 8 +
turbinate +
fertile +  and bisexual +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
fertile +  and bisexual +
Tex. +, Mexico (Chihuahua) +, Mexico (Coahuila) +, Mexico (Durango) +  and Mexico (Nuevo León) +
700–1500 m +
resinous +
gland-dotted +
hairy +  and glabrous +
pustulate +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Often in gypseous, calcareous, saline, or gravelly soils +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
narrowly ovate +  and lanceolate or obovate +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
ascending +  and spreading +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
spreading;recurved +
narrowly lanceolate +  and triangular +
enlarged +
2-carpellate +
persistent +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
green +  and brown +
Flowering late summer–fall (or with adequate rain). +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
styliferous +, neuter +  and pistillate +
bearing subulate enations +, hairy +  and bristly +
flat;convex +
exalbuminous +
Illustrated +
branched +  and sulcate +
resinous +
erect +  and ascending +
papillate-scabrous +  and glabrous +
linear +  and subulate +
appendaged +  and truncate +
papillate +  and smooth +
Ericameria triantha +  and Xylothamia triantha +
Gundlachia triantha +
Gundlachia +
species +
campanulate +
puberulent +  and glabrous +
papillate-scabrous +
perennial +, biennial +  and annual +
100 cm1,000 mm <br />1 m <br /> (200 cm2,000 mm <br />2 m <br />) +