Herzogiella striatella |
Herzogiella adscendens |
|
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herzogiella moss, tassel moss |
herzogiella moss |
|
Habit | Plants in thin to dense mats, yellowish, dark green, or brownish. | Plants in dense mats, yellowish. |
Stems | 2 cm, 0.5–2 mm wide, ascending to erect. |
3 cm, 1.5–3 mm wide, creeping to ascending; pseudoparaphyllia foliose. |
Leaves | loosely imbricate to somewhat spreading, often squarrose, sometimes squarrose-recurved, usually straight at stem and branch apices, not plicate, 0.6–2 × 0.3–0.8 mm; base distinctly decurrent; margins serrulate to strongly serrate; alar cells rounded to oval, abruptly inflated, 14–65 × 14–24 µm, hyaline, sometimes orange to red; basal laminal cell walls pitted, sometimes pitted to mid leaf or beyond; medial cells 24–50 × 4–7 µm. Sexual condition autoicous. |
imbricate to somewhat spreading, often somewhat falcate when dry, not plicate, 1.5–3 × 0.4–0.6 mm; base distinctly short-decurrent; margins serrulate to entire; alar cells rounded to oblong, abruptly inflated, 14–70 × 14–28 µm, hyaline; basal laminal cell walls pitted, sometimes to mid leaf; medial cells 33–85 × 4–7 µm. Sexual condition dioicous. |
Seta | light brown to red, 0.9–2 cm. |
yellowish, 1.1–1.5 cm. |
Capsule | inclined to nearly erect, light brown, oblong to cylindric, slightly arcuate to straight, 1–2 × 0.3–0.5 mm, not or little contracted below mouth when dry; operculum conic to conic-apiculate, 0.3–0.4 mm. |
inclined, light brown, cylindric, slightly curved, 2.5–3 × 0.3–0.5 mm, not or little contracted below mouth when dry; operculum conic to conic-apiculate, 0.3–0.4 mm. |
Spores | 10–15 µm. |
17–22 µm. |
Herzogiella striatella |
Herzogiella adscendens |
|
Phenology | Capsules mature summer. | Capsules mature late summer. |
Habitat | Shaded soil and humus, acidic cliffs and rock, rotten logs, stumps, base of trees, exposed tree roots | Tree trunks, rotten logs, stumps, humus over acidic cliffs |
Elevation | low to high elevations (0-2000 m) (low to high elevations (0-6600 ft)) | low elevations (0-90 m) (low elevations (0-300 ft)) |
Distribution |
AK; CT; DE; GA; KY; MA; MD; ME; MI; MO; NC; NH; NJ; NY; OH; PA; RI; TN; VA; VT; WA; WI; WV; BC; NB; NL; NS; ON; PE; QC; Greenland; Europe; Asia
|
AK; BC; Asia |
Discussion | Herzogiella striatella is recognized by its close, squarrose to squarrose-recurved leaves with 2–4 rows of abruptly inflated, hyaline or orange to red, decurrent cells extending 4–6 cells down the stem. This species has a disjunct distribution in North America, occurring commonly in the eastern third of the continent and more rarely in the western part in British Columbia, Alaska, and Washington. Herzogiella striatella may have a closer relationship to H. cylindricarpa (Cardot) Z. Iwatsuki of Mexico, Central America, South America, and Africa than to other North American species, as revealed by a study of spore ornamentation (R. R. Ireland 1990). The report for Alabama by Ireland (1991b) is an error. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Herzogiella adscendens, previously included in Campylium (Sullivant) Mitten, is the most recent addition to Herzogiella. It differs from the other North American species of Herzogiella by its dioicous condition, serrulate to entire leaf margins, presence of foliose pseudoparaphyllia (sometimes difficult to find) and perichaetial leaves that are about twice as long as the other leaves. The capsules are very rare. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 28, p. 528. | FNA vol. 28, p. 529. |
Parent taxa | Hypnaceae > Herzogiella | Hypnaceae > Herzogiella |
Sibling taxa | ||
Synonyms | Leskea striatella, Dolichotheca striatella, H. fitzgeraldii, H. muehlenbeckii, Isopterygium striatellum, Plagiothecium muehlenbeckii, P. striatellum, Sharpiella striatella | Stereodon adscendens, Campylium adscendens, C. stellatum var. adscendens, C. treleasei |
Name authority | (Bridel) Z. Iwatsuki: J. Hattori Bot. Lab. 33: 374. (1970) | (Lindberg) Z. Iwatsuki & W. B. Schofield: J. Hattori Bot. Lab. 37: 609. (1973) |
Web links |