341 



leviter incurvum, circiter 10 mm. longum 2 mm. latumque, 5-nervosum, 

 acuminatissimum ; lateralia in medio connata, circiter 85 mm. longa. Petala 

 angusta, falco-lanceolata, 5-nervosa, circiter 7 mm. longa 125 mm. lataque. 

 Labellum lanceolatum, perbreve unguiculatum, circiter 65 mm. longum, prope 

 medium arcuatum ; pars membranacea angusta, marginibus integerrimis non 

 crenulatis ; pars callosa comparate grandis, lanceolata, non crassa,- circiter 5 mm. 

 longa, paene ad apicem producta, marginibus liberis. Columnae laciniae in 

 altitudine rostello et antherae aequantes, lineari-falcatae, obtusae, membranaceae, 

 inaequaliter bidentatae. Caudicula sub-brevis; glandula grandis, ovato- 

 lanceolata. 



Western Australia: Albany, Dr. A. Syme Johnson; Muresk, Mrs. W. 

 E. Cooke, 4/9/07. 



Prasophyllum ellipticum, n. sp. 



Planta robusta, ad 104 cm. alta. Lamina folii ad 65 cm longa, spicam non 

 excedens. Spica circiter 28 cm. longa. Flores sessiles, subvirides, numerosi, 

 conferti ; ovaria gracilia, circiter 12 mm. longa. Segmenta perianthii 

 angustiuscula ; sepalum dorsale angustum, ovato-lanceolatum, 7-nervosum, sepalis 

 lateralibus longiore, fere erectum, leviter incurvum, circiter 12 5 mm. longum 



4 mm. latumque ; lateralia in medio connata, circiter 1 1 mm. longa. Petala 

 obtuse falcata vel falco-lanceolata, erecta, 5-7 nervosa, circiter 9 5 mm. longa 

 2'5 mm. lataque. Labellum perbreviter unguiculatum, ellipticum, circiter 11 mm. 

 longum 5 25 mm. latumque, ad apicem gradatim recurvum ; pars membranacea 

 alba, lata, ample crispata ; lamella adnata tenuis, circiter 6'5 mm. longa 4'5 mm. 

 lataque, marginibus lateralibus liberis, ultra flexum in angustiusculo obtuso 

 cacumine terminans. Columnae laciniae membranaceae, obtuse falcatae, rostello 

 longiores, circiter 5 mm. altae, basi lobulatae. Anthera apiculata, rostello brevior. 



Western Australia: Near Jarnadup, lima Knox-Peden, 21/12/18. 



Caladenia pectinata, n. sp. 



Planta robusta, saepe 60 cm. alta. Caulis hirsutus, unibracteatus. Folium 

 anguste lineare, hirsutissimum. Flos circiter 6-9 cm. in diametro, fere 

 solitarius, subflavus cum notationibus subrufis. Sepalum dorsale erectum, leviter 

 incurvum, ad basin dilatatum concavum, longissime caudatum, clavatum, circiter 



5 cm. longum ; lateralia sepalo dorsali similia, patentia. Petala retroflexa, 

 anguste lanceolata, acuminata, non clavata, sepalis angustiora, circiter 35 cm. 

 longa. Labellum breviter unguiculatum, ovato-oblongum vel late ovato- 

 lanceolatum, circiter 2 cm. longum, obscure 3-lobatum ; dimidium inf erius ad 

 columnam erectum, marginibus prof unde pectinatis ; lobus intermedins 

 triangularis, recurvus, marginibus breviter denticulatis, apice obtuso ; calli 

 laminae basi lineares 4-seriati, deinde ad apicem 6-8-seriati lineares vel sessiles. 

 Columna circiter 2 cm. longa, incurvissima, in dimidio superiore late 

 membranaceo-dilatata, basi bicallosa ; anthera breviter mucronata. 



Western Australia: Albany District, Rogers, Sep., 1919; York, O. H. 

 Sargent; Cork Swamp, near Perth, Mrs. Tapp, 3/9/07; Swan View, Mrs. W. 

 E. Cooke, 13/9/06. 



EXPLANATION OF PLATE XXVIL 



Fig. I. Ptersostylis deciirva, Rogers. Nat. size. 



2. Radical leaves of same, nat. size, not present in the flowering plant. 



3. Labellum from above (enlarged). 



4. Labellum from below (enlarged). 



5. Labellum from the side (enlarged). The claw and basal appendage are well seen. 



6. Column from the front (enlarged). 



7. Column from the side (enlarged). 



