TAB. 49. 



Tribe Ophryde^. 



Sub-tribe DiSEJ?. 



Genus DiSA. 



Disa longicornu, Lijin. /., Suppl. (1781), p. 406. — Herba 

 decumbens vel adscendens g-labra, 10-15 cm. alta ; caulis flexuosus, 

 basin versus 3-5foliatus, vaginis 2-3, laxis inembranaceis venosis 

 acutis vestitus, apice Ifl. ; folia patentia lanceolato-oblonga 

 acuta, basi in petiolum attenuatum, 5-9 cm. long-a ; bracteae 

 patentes vel reflexae, ovatae vel ovato-lanceolatae, acutae mem- 

 branaceae, ovario subaequilongae ; sepala lateralia patentia ovato- 

 oblong-a obtusiuscula, subapice mucronulata, 2 "4-3 cm. long-a; 

 sepalum impar erectum vel patens galeatum subinruiidibuliforme, 

 ore subrotundato, obtusum, sepalis lateralibus aequilongum, calcare 

 patenli-dependente, apice inflexo, attenuate obtuso, ovario saspius 

 duplo long-iore ; petala decumbentia linearia acuminata, infra 

 medium obtuse lobata, 3-2 cm. longa ; labellum porrectum, ovatum 

 vel oblongo-lanceolatum, subacutum, nervo medio prominente, 

 2-2-5 cm. longum ; rostellum erectum 3dentatum, stigma paullo 

 excedens ; anthera valde resupinata ; ovarium strictum clavatum, 

 vix 2*5 cm. longum. {Ex exempli, plur. viv. exsiccatisqtie). D. 

 longicornis, Thtmb., Prodr. PL Cap. (1794), />. 4. Orch. Cape 

 Penins. (1888), /. 6. 



Hab.: South-western Region ; Jonkers Hoek Mt., nr. Stellen- 

 bosch, alt. 900 met., fl. Dec, E. Dyke! (No. 4525 in herb. 

 Marloth. ) Cape Peninsula, amongst moss or grass in clefts of steep 

 rocks on the sides turned from the sun, where the water drips in 

 early summer, on Table Mt., alt. 630-900 met., fl. Dec. -Jan., 

 Thunber^, Ecklon, Zeyher, Bolus, 4818 ! (Herb. Norm. Aust.-Afr., 

 161.) R. Schlechier, 83, Wolley-Dod, 2331 ! 



Plate 49. Fig. 1, odd sepal, side sepals and lip ; 2, flower, 

 with sepals removed ; 3, one of the petals — all natural size ; 4, 

 column X 3 diams. ; 5, pollinium, enlarged. 



A decumbent or ascending glabrous herb, 10-15 cm. high ; stem 

 flexuous, with 3-5 leaves towards the base, clothed with 2-3, lax 

 membranous veined acute sheaths, Ifl. at the apex ; leaves 

 spreading lanceolate-oblong acute, attenuate at base into a petiole. 



