Tab. 7900. 

 DENDROBIUM Madonna. 



Native of New Guinea. 



Nat. Ord. Orchide^e. — Tribe Dendrobie;e. 

 Genus Dendrobium:, Ser.; (Benth. & Hoolc.f. Gen. Plant, vol. iii. p. 488.) 



Dendrobium (Stachyobiuru) Madonnx ; pseudobulbis confertis 6-9 poll, longis 

 inferne stipitiformibus, articulis inferioribus gracilibus vaginatis, basilari 

 tuberoso, terminali elongato incrassato 2-4 poll, longo fusiformi sulcato 

 2-3-phyllo, foliis l|-2 poll, longis Bessilibus oblongis subcoriaceis obtusis, 

 pedunculis terminalibaa 1-2 poll, longis trifloriB, pedicellis cum ovario 

 pollicaribus, bracteis parvis oblongis subacutis, florilms nutantibus 1\ 

 poll, latis albis, sepalis 1-1^ poll, longis oblongis acuminatis, lateralibus 

 subfalcatis basi latioribus, petalis sepalis multo majoribas ad 1-J- poll, 

 longis £ poll, latis obovato-spathulatis apiculatis, labello f poll, longo, 

 concavo explanato oblato obscure 3-loboacumiuato, lobis lateralibus juxta 

 margines purpureo maculatis, disco basin versus virescente callo elongato 

 bicarinato apice rotundato aucto. 



D. (Stachyobium) Madonnse, Rolfe in Kew Bulletin, ined. 



The nearest ally, and it is a very near one, of B. Madonnse 

 is, as Mr. Rolfe points out, D. Fairfaxii, Rolfe (in Bard. 

 Ghron, 1889, i. 798) non F. Muell., a native of the New 

 Hebrides, which differs in the narrower petals and lip. 

 B. Madonnw, on the other hand, is a native of New 

 Guinea, whence it was introduced by Messrs. Sanders 

 & Co., who flowered it in their Nursery in December, 

 1 899, and to whom the Royal Gardens are indebted for 

 the plaut here figured. 



Descr. — Pseudobulbs crowded, six to nine inches high, 

 the lower internodes cylindric, slender, forming a stipes 

 to the terminal, which is two to four inches long, fusi- 

 form and grooved ; lowest internode tuberous, obpyriform, 

 one half to three-quarters of an inch long, smooth. Leaves 

 two to three at the apex of the pseudobulb, one and a 

 half to two inches long, sessile, oblong, obtuse, coriaceous. 

 Peduncles terminal, one to two inches long, slender, three- 

 flowered ; pedicels with the ovary an inch long; bracts 

 very small, acute. Flowers two and a half inches broad, 

 nodding, white, with a few purple spots near the margins 

 of the lateral lobes of the lip. Sepals one to one and a 

 half inch long, oblong, acuminate ; lateral broad at the 



June 1st, 1903. 



