ORCHIDACEiE 



tended by imbricating scarious bracts, and are never borne at the 

 nodes of the stem opposite rudimentary leaves. 



1. D. Brongniartii Krdnzl. This has the aspect of an Aporum species, but 

 the inflorescence is abnormal in the section. Lindley described it under 

 Eria as Eria Aporoides, but the number of pollinia indicates closer 

 affinities with Dendrobium. Probably a new section is necessary. 



2. D. cultratum Schltr. 



3. D. Elmeri Ames. 



17. § Grastidium. The species of this section are character-, 

 ized by small flowers produced in pairs. Peduncle arising from 

 between two rigid scale-like bracts on the stems. Leaves grass-like 

 except in D. leytense Ames. 



1. D. acuminatissimum Lindl. Sepals extraordinarily elongated. 



2. D. leytense Ames. Leaves rarely exceeding 5 cm. in length, 7 mm. in 

 width. 



3. D. luzonense Lindl. Labellum three-lobed, terminal lobe obtuse, lat- 

 eral lobes much reduced. 



4. D. ornithoflorum Ames. Labellum three-lobed, sepals triangular, 

 stems much branched. 



5. D. pergracile Ames. Lateral sepals linear-lanceolate. Labellum 5 mm. 

 long. 



6. D. verruculosum Ames. Similar in its flowers to D. ornithoflorum. 

 Stems not branched. 



18. § Dolichocentrum. To this section D. papilio Loher 

 seems to belong. In habit it resembles closely D.JiircatmnTlemxv. 

 The mentum of the labellum, however, is not so spur-like as in 

 D. furcatum. 



1. D. papilio. Loher. Flowers conspicuous, solitary. 



1. Dendrobium aciculare Lindl. in Bot. Reg. (1840) Misc. 81. 

 "Caule basi conico angulato sursum tereti, foliis orbicularibus, 

 flore solitario ? terminali galeato, labelli postici trilobi per medium 



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