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.

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 />) +
5mm;20mm +
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 +
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 +