TAB. 100. 



Tribe Ophrydeae. 

 Sub-tribe Corycieae. 

 Genus Pterygodium. 



Pterygodium Volucris, Snart-, in Kovgl. Yetensk. Acad. Xya 

 Handl., i:ul. xxi, p. 218 (1800) ; Ker, in Jviini. Sci. E. Inst. Lond., 

 vol. ix, t. 4, /. 1 (1820) — j Ommatodium, Lindley (pro genere). — 

 Herba glabra erecta, |-l-pedali3 vel ultra ; caulis saepius rectus laxe 

 foliatus; folium radicale pateus ovatum vel oblongum acutum, 6-10 cm. 

 longum, superiora erectiora minora sensim in vaginas bracteaeformes 

 abeuntia ; spica cyliudrica multitiora, bracteis lanceolatis deflexis, 

 lloribus circa 1*2 cm. longis, 8 mill, latis ; sepala lateralia patentia 

 ovata acuta vel subobtusa ; sepalum impar oblongum obtusissimum ; 

 petala subtriangularia, margiuibus superioribus plicato-deflexis ; labelli 

 linibus late triaugulari-hastatus acutus, plica deutiformi utroque latere 

 patente, appendice erecta subaequilonga cyatbiformi, margine oblique 

 integro vel autice emarginato ; antherae couuectivum iucurvum ad- 

 scendens subsemiannulaie, loculis inversis, glandulis inferis; rostelli 

 brachia conuectivo adnata ; stigmata 2, antica pulvinata basi labelli 

 appeudicis posita. {Kx cxeinjdl. jdur. vir.) — Oplirys Volucrls, Linnaeus 

 jil. SuppL, p. -103 (1781); 0. triphylla, Thunhenj, Frodr. PL Cap., p. 2 

 (1794) ; Ommatodium Volucris, Lindley, Gen. d- Sp. Urch., p. 365 

 (1838). 



Hab: South-western Region; Cape Colony: in somewbat dry 

 opeu places on the fiats and at the foot of the mountains on the Cape 

 Peninsula, alt. 20-100 meters, ti. Sept. -Oct., nowhere abundant; near 

 Caledou, alt. 800 met. ; Swellendam ; Nama'land, mountains near 

 Klipfontein, alt. 950 met. 



Plate 100. Fig. 1, flower, front view; 2, side sepals; 3, odd 

 sepal; 4, petals; 5, column, with lip, front view; 6, ditto, posterior 

 view ; 7, ditto, the appendage of the lip being removed ; 8, ditto, the 

 appendage of the lip and the lower part of the limb of the lip cut ofi' 

 and the column cut vertically through the middle ; 9, apex of one of 

 the rostellary arms bearing a polhnium, — all variously magnified : 

 a, anther-cell; c, connective of the anther ; ar, one of the arms of the 

 rostellum ; L, lip ; aj), appendage of the lip ; s, one of the stigmas ; 

 ff, gland of the pollinium ; p, point of attachment of the appendage of 

 the lip which has been removed. 



