Philonotis longiseta

(Michaux) E. Britton

Bryologist 14: 44. 1911.

Basionym: Bartramia longiseta Michaux Fl. Bor.-Amer. 2: 301. 1803
Treatment appears in FNA Volume 28. Treatment on page 108. Mentioned on page 107.

Plants small, in lax to dense tufts, bright green, rufous proximally. Stems 1–3 cm, lax, simple or 2-fid, tomentose proximally. Leaves laxly erect to erect, sometimes secund when dry, erect-spreading when moist, narrowly triangular-lanceolate, 1–2.5 mm; margins narrowly revolute, serrulate nearly throughout, teeth single or paired; apex acuminate; costa excurrent, abaxial surface weakly papillose; laminal cells long, narrow, more than 9:1, prorulose, prorulae pointed, projecting at extreme distal ends of cells; basal cells rectangular, shorter, broader than distal, to 45 × 12 µm; distal cells linear, 30–65 × 5–7 µm. Specialized asexual reproduction absent. Sexual condition autoicous; perigonia gemmiform. Seta 1.5–3.5 cm, straight or flexuose. Capsule 1.8–2 mm. Spores reniform, 26–33 µm.

Phenology: Capsules mature Feb–Dec.
Habitat: Soil, rock, wet embankments
Elevation: low to moderate elevations


V28 169-distribution-map.gif

Ala., Ark., Fla., Ga., Iowa, Kans., La., Miss., Mo., N.Y., Ohio, Okla., Pa., S.C., Tex., Va., Mexico, West Indies (Puerto Rico), Central America (Costa Rica, Guatemala), n South America (Venezuela).


Philonotis longiseta can be recognized by its flat, narrowly triangular leaves with forward projecting prorulae at the distal ends of laminal cells throughout the leaf. The perigonia are lateral and found just proximal to the perichaetia.

Selected References


Lower Taxa

... more about "Philonotis longiseta"
Dana G. Griffin III +
(Michaux) E. Britton +
Bartramia longiseta +
Ala. +, Ark. +, Fla. +, Ga. +, Iowa +, Kans. +, La. +, Miss. +, Mo. +, N.Y. +, Ohio +, Okla. +, Pa. +, S.C. +, Tex. +, Va. +, Mexico +, West Indies (Puerto Rico) +, Central America (Costa Rica +, Guatemala) +  and n South America (Venezuela). +
low to moderate elevations +
Soil, rock, wet embankments +
Capsules mature Feb–Dec. +
Illustrated +
Bartramidula +
Philonotis longiseta +
Philonotis +
species +