Seymeria cassioides

(J. F. Gmelin) S. F. Blake

Rhodora 17: 134. 1915.

Common names: Yaupon blacksenna senna seymeria
Basionym: Afzelia cassioides J. F. Gmelin Syst. Nat. 2: 927. 1792
Treatment appears in FNA Volume 17. Treatment on page 563. Mentioned on page 562.

Stems pubescent to villous, eglandular. Leaves: blade margins 2-pinnatifid, pinnules filiform, surfaces not scabrid. Pedicels 3–6 mm. Flowers: calyx lobes linear, margins entire; corolla yellow, with purple markings in throat, externally glabrous, internally pubescent proximal to adaxial sinus, between lobes, and in a ring at stamen insertion; filaments glabrous distally, anthers dehiscing to 1/4 length. Capsules symmetric, pyriform, glabrous. Seeds ovoid, reticulate, wings absent. 2n = 26.


Phenology: Flowering and fruiting Sep–Oct.
Habitat: Dry to moist pine forests, pine savannas, sandhills and scrub of coastal plains.
Elevation: 0–300 m.

Distribution

Ala., Ark., Fla., Ga., La., Miss., N.C., S.C., Tenn., Tex., Va., West Indies (Bahamas).

Discussion

Seymeria cassioides is an obligate parasite of 11 pine species in the southeastern United States; it is also capable of growing on western pines and other conifers (W. F. Mann and L. J. Musselman 1980). Infestations of pine plantations are not common; in sufficient numbers, S. cassioides may produce chlorosis and mortality in cultivated Pinus elliottii and P. taeda (H. E. Grelen and Mann 1973).

Selected References

None.

Lower Taxa

None.
... more about "Seymeria cassioides"
Christopher P. Randle +
(J. F. Gmelin) S. F. Blake +
Afzelia cassioides +
Yaupon blacksenna +  and senna seymeria +
Ala. +, Ark. +, Fla. +, Ga. +, La. +, Miss. +, N.C. +, S.C. +, Tenn. +, Tex. +, Va. +  and West Indies (Bahamas). +
0–300 m. +
Dry to moist pine forests, pine savannas, sandhills and scrub of coastal plains. +
Flowering and fruiting Sep–Oct. +
Afzelia +
Seymeria cassioides +
Seymeria +
species +