Koanophyllon palmeri

(A. Gray) R. M. King & H. Robinson

Phytologia 22: 150. 1971.

Common names: Palmer’s umbrella thoroughwort
Basionym: Eupatorium palmeri A. Gray Proc. Amer. Acad. Arts 21: 383. 1886
Treatment appears in FNA Volume 21. Treatment on page 543. Mentioned on page 542.

Perennials or subshrubs, 50–150 cm. Stems mostly sparsely puberulent (hairs upcurved or apically bent). Leaves opposite; petioles 0–5 mm; blades lanceolate to triangular-lanceolate, (2–) 3–6 × 0.8–2 cm, bases rounded, margins shallowly serrate to subentire, apices acute (not acuminate), abaxial faces eglandular or minutely glanddotted, adaxial sparsely strigose to hispidulous. Involucres (3–) 3.5–4 mm. Phyllaries: outermost ovate-elliptic to obovate to narrowly oblong-lanceolate, puberulent, margins herbaceous, usually weakly ciliate. Corollas white, (2–) 2.4–2.8 mm, lobes glandular. Cypselae 1.6–1.8 mm, sparsely hispidulous.


Phenology: Flowering Sep–Nov(–Dec).
Habitat: Shaded rocks along streams, crevices, oak woodlands
Elevation: 800–1500 m

Discussion

Koanophyllon palmeri is native primarily to western Mexico (Sinaloa, Chihuahua, and Sonora to Durango and Jalisco; R. McVaugh 1984; B. L. Turner 1997). Similar plants (known as Eupatorium palmeri var. tonsum B. L. Robinson) occur in near-coastal localities from Michoacan to Colima, Jalisco, Nayarit, and Sinaloa, Mexico.

Selected References

None.

Lower Taxa

None.

"fine" is not a number.

... more about "Koanophyllon palmeri"
minutely +  and eglandular +
sparsely strigose +  and hispidulous +
not tailed +, truncate +, rounded +  and obtuse +
scarious +
usually ovate +  and lanceolate +
usually terete +  and clavate +
corymbiform +  and paniculiform +
indeterminate +  and determinate +
Guy L. Nesom +
(A. Gray) R. M. King & H. Robinson +
rounded +
enlarged +
Eupatorium palmeri +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
3 cm30 mm <br />0.03 m <br /> (6 cm60 mm <br />0.06 m <br />) +
dissected +, lobed +, toothed +  and entire +
lanceolate;triangular-lanceolate +
0.8 cm8 mm <br />0.008 m <br /> (2 cm20 mm <br />0.02 m <br />) +
papillate +  and rugose +
(4-)5-angled;10-ribbed +
filiform;obscurely clavate +
Palmer’s umbrella thoroughwort +
0.2 cm2 mm <br />0.002 m <br /> (0.24 cm2.4 mm <br />0.0024 m <br />) +
0.24 cm2.4 mm <br />0.0024 m <br /> (0.28 cm2.8 mm <br />0.0028 m <br />) +
prismatic +
fertile +  and bisexual +
Ariz. +, N.Mex. +  and Mexico +
800–1500 m +
strigose +, puberulent +, hispidulous +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Shaded rocks along streams, crevices, oak woodlands +
in usually determinate , rarely indeterminate , arrays +  and singly +
indeterminate +
each +  and sessile +
0.3 cm3 mm <br />0.003 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
obconic;hemispheric +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
lanceolate +  and lance-linear +
dentate +  and entire +
shallowly serrate +  and subentire +
ovate-elliptic +  and obovate +
2-carpellate +
persistent +
0 cm0 mm <br />0 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Flowering Sep–Nov(–Dec). +
7 +  and 16 +
bearing subulate enations +, hairy +  and bristly +
convex;flat +
exalbuminous +
puberulent +
appendaged +  and truncate +
hirsutulous +
papillate +
Compositae +
Koanophyllon palmeri +
Koanophyllon +
species +
50 cm500 mm <br />0.5 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +