Weissia inoperculata

(H. A. Crum) H. A. Crum

Bryologist 67: 164. 1973,.

Basionym: Hymenostomum inoperculatum H. A. Crum Madroño 14: 74, figs. 1–6. 1957
Treatment appears in FNA Volume 27. Treatment on page 518. Mentioned on page 490, 513, 515.
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Leaves elliptic, base weakly or not differentiated in shape, shoulders absent, distal laminal margins plane to erect, rarely incurved, apex plane, acute to rounded-acute, mucro usually strong, of (3–) 4–6 (–7) cells; costal adaxial stereid band smaller than the abaxial; distal laminal cells 8–10 (–13) µm wide. Sexual condition dioicous (perigoniate plants mixed with the archegoniate). Seta elongate, 0.2–0.3 cm. Capsule cleistocarpic, short-elliptic, operculum weakly differentiated, peristome absent.


Phenology: Capsules mature Feb.
Habitat: Garden, soil
Elevation: moderate elevation

Discussion

Weissia inoperculata is known only from the type specimen (Stanford University, Santa Clara County). It has a gametophyte much like that of Trichostomum brachydontium and may prove better placed in Trichostomum. The operculum is weakly marked off by a ring of several rows of small cells.

Selected References

None.

Lower Taxa

None.
... more about "Weissia inoperculata"
not differentiated +
long-excurrent +  and short-excurrent +
acute +  and rounded-acute +
Richard H. Zander +
(H. A. Crum) H. A. Crum +
crescent +
smaller +
rhomboid +  and rectangular +
papillose +  and smooth +
usually slightly wider +
not differentiated +
differentiated +
Hymenostomum inoperculatum +
obovoid +
cucullate +
cleistocarpous +  and stegocarpous +
monoicous +, dioicous +  and sexual +
flat to bulging +
persistent +
4 +  and 6 +
elongate-rhomboid +  and elongate +
thicker +
tomentose +  and bare +
mucronate +
dioicous +  and sexual +
erect +  and incurved +
subquadrate;hexagonal +
moderate elevation +
differentiated +
multicellular +
Garden, soil +
yellow +  and orange-red or red +
1 +  and 2 +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
concave;keeled;channeled;ovoid;lanceolate or lingulate +
long-ligulate +
spiraled +  and contorted +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
spreading +  and incurved +
triangular +  and oblong +
reduced +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
dentate +  and entire +
short-conic;short-rostrate +
differentiated +
photosynthetic +
2 +  and 6 +
dioicous +, monoicous +  and sexual +
spiculiform +  and 2-fid +
lateral +  and terminal +
lateral +  and terminal +
red +, orange +  and yellow +
oblong-truncate +  and long-triangular +
Capsules mature Feb. +
straight +
elongate +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
2 +  and 1 +
yellow +  and laminal +
4 cm40 mm <br />0.04 m <br /> (10 cm100 mm <br />0.1 m <br />) +
rounded-triangular +  and rounded-pentagonal +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Astomum +, Hymenostomum +, Weissia sect. Astomum +, Weissia subg. Astomum +  and Weissia subg. Hymenostomum +
Weissia inoperculata +
species +
elliptical;short-ovate or cylindric +
0.1 cm1 mm <br />0.001 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
semicircular +  and circular +
orange +  and yellow +
stemless +  and perigoniate +
brown;tan or yellow +
plant +  and cespitose +
occasionally smaller than the perichaetiate +