Ditrichum difficile (Duby) M.Fleisch.

Species

Bryophytes > Dicranales > Ditrichaceae > Ditrichum

Characteristics

Plants small to medium, in tufts, yellowish green; terricolous. Stems 7-12 mm high, simple; in section round, central strand present, inner cortical cells large, thin-walled, outer cortical cells in 2-3 rows, substereids. Leaves flexuose, oval to oblong, long-subulate, 1.8-3.5 mm long; margins plane to erect in subula, entire. Costa broad, filling subula; in proximal section flattened, guide cells 12-18, large, exposed ventrally or frequently with 2-3 ventral surface cells over central guide cells, dorsal stereid band 2-3 cells thick, dorsal surface cells not differentiated; in distal section guide cells 18-20, large, median, ventral stereid band 1-2 cells thick, ventral surface cells substereids, dorsal stereid band 2-4 cells thick, dorsal surface cells substereids, dorsal surface irregular. Laminal cells narrowly rectangular, incrassate; basal cells longer, oblong, incrassate. Autoicous. Perichaetial leaves oblong, abruptly setaceous, 5.5-6.5 mm long. Seta 10-20 mm long, yellow to reddish yellow; capsule erect, urn cylindrical or broader below, 2.5-3.2 mm long; peristome fragile, teeth deeply cleft above short basal membrane into two narrow, papillose processes, rarely perforated below; operculum rostrate, 0.8 mm long; calyptra cucullate, 10 mm long; spores round, 17-18 µm, papillose.
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Cultivation

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Images

Ditrichum difficile unspecified picture

Distribution

Ditrichum difficile world distribution map, present in South Africa

Identifiers

LSID 35132714
WFO ID wfo-0001164869
COL ID 6DBX7
BDTFX ID -
INPN ID 656640
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Diaphanophyllum vallis-gratiae Trichostomum laxifolium Dryptodon crispus Leptotrichum affine Leptotrichum boryanum Leptotrichum capense Leptotrichum flexifolium Leptotrichum muelleri Leptotrichum plicatum Leptotrichum rufescens Leptotrichum semilunare Leptotrichum viride Trichostomum oldfieldii Trichostomum setosum Trichostomum difficile Ditrichum difficile Ditrichum flavipes Ditrichum flexifolium Ditrichum formosicum

Lower taxons

Ditrichum difficile var. robustum Ditrichum difficile var. tenellum