Genus Dendrobium section Brevisaccata
Genus Dendrobium sect. Brevisaccata Kränzl. in Engl., Pflanzenr. IV. 50. II. B. 21 (1910) 158. Type species: Dendrobium agrostopryllum F.Muell.
Synonyms:
- Genus Dendrobium sect. Trachyrhizum Schltr., Repert. Spec. Nov. Regni Veg. Beih. 1 (1912 ) 447. Type species: Dendrobium trachyrhizum Schltr.
- Trachyrhizum (Schltr.) Brieger in Schltr., Orchideen ed. 3, 1 (1981) 687. Type species: Trachyrhizum schlechteri Brieger (basionym: Dendrobium trachyrhizum Schltr.).
Roots usually conspicuously papillose. Rhizomes short to somewhat elongated, creeping; Pseudobulbs elongated and slender, cane-like or sometimes rather fleshy, not branching, apical growth continuing for several seasons, many-leaved. Leaves glabrous; at the base a tubular sheath. Inflorescences lateral, usually elongate, patent, horizontal or arching, racemose or rarely a small sympodium of successive, 1-flowered branches (Dendrobium viridiflorum), few-flowered. Flowers rather small to medium-sized, resupinate. Mentum large. Lip mobile on the apex of the column foot, or sometimes immobile and adnate to it, in the basal part with a prominent backwards-pointing appendage which is usually connected to a pair of high lamellate keels at the base, or sometimes without keels on the lip but with a swollen median band.
Moluccas, New Guinea, Australia, Solomon Islands, Vanuatu, New Caledonia, Fiji.
Genus Dendrobium section Brevisaccata contains 11 species; in New Guinea 9 species.
Epiphytes in lowland and montane forest, also terrestrial in open montane vegetation.
- Family Orchidaceae
- Subfamily Epidendroideae
- Tribe Dendrobieae
- Subtribe Dendrobiinae
- Genus Dendrobium
- Section Brevisaccata
- Lavarack, B., W. Harris & G. Stocker. 2000. Dendrobium and its relatives. Timber Press, Portland, Oregon.
- P. Ormerod. 1997. Notes on the orchids of New Guinea and the Pacific. Australian Orchid Rev. 62, 3: 13-15.
Members of sect. Brevisaccata can be recognized by the strange warty roots as well as by the hinged lip having a backwards-pointing appendage at the base. With the exception of Dendrobium chalmersii, which with its contorted sepals and petals resembles a small-flowered member of section Spatulata, the species of section Brevisaccata are of little horticultural interest. This section has long been known as Trachyrhizum, but Kraenzlin's name was published slightly earlier.
In New Guinea Dendrobium section Brevisaccata contains the following 10 species and 1 variety:
Dendrobium angustipetalum
Dendrobium appendiculoides
Dendrobium chalmersii
Dendrobium cyrtolobum
Dendrobium delicatulum
Dendrobium dissitifolium
Dendrobium latelabellatum
Dendrobium prostheciglossum
Dendrobium prostheciglossum var. obtusilobum
Dendrobium taeniocaule
Dendrobium viridiflorum
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Genus Dendrobium section Brevisaccata
Dendrobium chalmersii F.Muell., habit, photo N.E.G. Cruttwell, based on Cruttwell (/68, PNG, Milne Bay Prov., Ilakai)
Genus Dendrobium section Brevisaccata
Dendrobium prostheciglossum Schltr. var. obtusilobum Schltr., habit, photo J.B. Comber, ex PNG, Wabag
Genus Dendrobium section Brevisaccata
Dendrobium prostheciglossum Schltr. var. obtusilobum Schltr., flower, photo J.B. Comber, ex PNG, Wabag
Genus Dendrobium section Brevisaccata
Dendrobium sp. sect. Brevisaccata, plant habit, photo Ed de Vogel, based on Leiden cult. 20031566 (NCBG Port Moresby cult. s.n.), from Papua New Guinea, without locality
Genus Dendrobium section Brevisaccata
Dendrobium sp. sect. Brevisaccata, inflorescence, photo Ed de Vogel, based on Leiden cult. 20031566 (NCBG Port Moresby cult. s.n.), from Papua New Guinea, without locality
Genus Dendrobium section Brevisaccata
Dendrobium sp. sect. Brevisaccata, flower, front view, photo Ed de Vogel, based on Leiden cult. 20031566 (NCBG Port Moresby cult. s.n.), from Papua New Guinea, without locality
Genus Dendrobium section Brevisaccata
Dendrobium sp. sect. Brevisaccata, flower, oblique lateral view, photo Ed de Vogel, based on Leiden cult. 20031566 (NCBG Port Moresby cult. s.n.), from Papua New Guinea, without locality
Genus Dendrobium section Brevisaccata
Dendrobium sp. sect. Brevisaccata, flower, lateral view, photo Ed de Vogel, based on Leiden cult. 20031566 (NCBG Port Moresby cult. s.n.), from Papua New Guinea, without locality
Genus Dendrobium section Brevisaccata
Dendrobium appendiculoides J.J.Sm. aff, plant habit, photo Ed de Vogel, based on Leiden cult. 20030805 (de Vogel & Vogel), from Papua New Guinea, Morobe Prov.
Genus Dendrobium section Brevisaccata
Dendrobium appendiculoides J.J.Sm. aff, flower, oblique lateral view, photo Ed de Vogel, based on Leiden cult. 20030805 (de Vogel & Vogel), from Papua New Guinea, Morobe Prov.
Genus Dendrobium section Brevisaccata
Dendrobium appendiculoides J.J.Sm. aff, flower, front view, photo Ed de Vogel, based on Leiden cult. Leiden cult. 20031628 (Harris), from Papua New Guinea, Gulf Prov.
Genus Dendrobium section Brevisaccata
Dendrobium appendiculoides J.J.Sm. aff, flower, oblique lateral view, photo Ed de Vogel, based on Leiden cult. Leiden cult. 20031628 (Harris), from Papua New Guinea, Gulf Prov.