Philonotis uncinata

(Schwagrichen) Bridel

Bryol. Univ. 2: 22. 1827.

Basionym: Bartramia uncinata Schwägrichen Sp. Musc. Frond. Suppl. 1(2): 60, plate 57 [bottom]. 1816
Synonyms: Philonotis glaucescens (Hornschuch) Brotherus
Treatment appears in FNA Volume 28. Treatment on page 110. Mentioned on page 107, 108.

Plants small, in lax to dense tufts, yellowish. Stems 0.5–1.5(–3) cm, erect to inclined, simple, tomentose proximally. Leaves erect and straight or curved and homomallous when dry, erect-spreading when moist, triangular-lanceolate, 0.7–1.3 mm; margins plane proximally, narrowly revolute distally, bluntly serrulate nearly to base, teeth usually single proximally, paired distally; apex acuminate; costa percurrent to short-excurrent, distal abaxial surface rough; laminal cells quadrate to rectangular, less than 5:1, prorulose at distal ends, prorulae not conspicuous, sometimes obscure, few; basal cells quadrate to rectangular, wider than distal, 10–65 × 8–12 µm; distal cells narrowly oblong, 20–50 × 5–8 µm. Specialized asexual reproduction by brood branches in distal leaf axils. Sexual condition dioicous; perigonia gemmiform. Seta 1.3–3 cm, straight. Capsule 1.5–2 mm. Spores subspheric to reniform, 23–26 µm.

Phenology: Capsules mature Feb–Mar.
Habitat: Rock, soil, open habitats
Elevation: low elevations (0-30 m)


V28 173-distribution-map.gif

Ala., Fla., Ga., Ky., La., Miss., S.C., Tex., Mexico, West Indies, Central America, n, c South America, Pacific Islands.


Philonotis uncinata is restricted in the flora area largely to states bordering the Gulf of Mexico. The species is recognized by its diminutive habit, percurrent to short-excurrent costa, doubly toothed leaf margin and laminal cells prorulose at distal ends. Philonotis glaucescens, treated as a synonym here, has been recognized elsewhere as P. uncinata var. glaucescens (Hornschuch) Florschütz. The features by which P. glaucescens is recognized (whether as a variety or as a species) include straight leaves and a percurrent costa; these seem to fall within the variation displayed by P. uncinata, the oldest name available for this group of related forms.

Selected References


Lower Taxa

... more about "Philonotis uncinata"
Dana G. Griffin III +
(Schwagrichen) Bridel +
Bartramia uncinata +
Ala. +, Fla. +, Ga. +, Ky. +, La. +, Miss. +, S.C. +, Tex. +, Mexico +, West Indies +, Central America +, n +, c South America +  and Pacific Islands. +
low elevations (0-30 m) +
Rock, soil, open habitats +
Capsules mature Feb–Mar. +
Bryol. Univ. +
Philonotis glaucescens +
Philonotis uncinata +
Philonotis +
species +