192 F.Fedde und RK. Schuster: Index novorum Siphonogamorum [174 
Pelexia subaequalis Ames |. ec. p. 5. — Guatemala (H. v. Tuerckheim (John 
Donnell Smith Distrib. n. 7994). | 
PR. Luetzelbureii Schltr. in Fedde, Rep. XVII (1921) p. 269. — Brasilien. 
P. Mouraei Schltr. 1. ec. p. 270. — Brasilien. 
P. sceptrim Sehltr. in Anexos Mem. Instit. Butantan vol. I. Fase. 4 (Säo Paulo 
1922) Tab. III. Fig. 1. — Säo Paulo (A. C. Brade n. 7766). 
P.laminata Schltr. 1. e. p. 22. Tab. III. Fig. 2. — Säo Paulo (A. €. Brade 
n. 6201). 
Peristylus odontoglossus Kränzl. in Arkiv f. Bot. XVI. Nr. 8 (Stockholm 1921) 
p. 28. — Neue Hebriden (Woods n. 27). | 
Perrieriella Schltr. nov. gen. in Fedde, Rep. Beih. XXXIII (1925) p. 365. 
Die neue Gattung erinnert beim ersten Anblick an gewisse indisch- 
chinesische Gastrochilus-Arten. Die Blüten sind aber ganz verschieden 
und beweisen, daß die Pflanze in den Formenkreis von Angraecum gehört. 
Die Form der Lippe erinnert an Oeonia, doch hat die Pflanze mit dieser 
Gattung weder in der Tracht, noch in sonstigen Merkmalen etwas zu tun. 
P. madagascariensis Schltr. 1. e. p. 366. —- Zentral-Madagascar (Perrier de la 
Bäthie n. 15334). 
Petalochilus Rogers nov. gen. in Journ. of Bot. LXII (London 1924) p. 65. : 
The affinities of the new genus are certainly with Caladenia rather 
than with Thelymitra, with which it has few features in common beyond 
the hitherto unique distinetion of an undifferentiated labellum. The 
Arpostasieae, in which, of course, the labellum is also undifferentiated, 
must be regarded only as doubtfull members of the Orchidaceae. It also 
approaches very closely to Glossodia, especially if it be admitted that 
the pouch in P. saccatus represents a fusion between the wings of the 
column and the staminode. In the living state, however, there is little 
that is reminiscent of that genus in which the labellum, although almost 
quite plain, is nevertheless very dissimilar in appearance to the petals, 
and the basal appendage is either bifid or distinetly dual in character. 
P. calyciformis Rogers ]l. c. p. 66. Pl. 571. Fig. 1—3. — New Zealand (H.B. 
Matthews). 
P. saccatus Rogers ]. ce. p. 66. Pl. 571. Fig. 4—7. — New Zealand (Matthews). 
Phajus neocaledonicus Rendle in Journ. Linn. Soc. London XLV (1921) p. 249. 
Pl. XIII. Fig. 5—7. — Neu-Caledonien (Compton n. 1408). 
P. subtrilobus Ames et Schweinfurth et S. in Ames, Fam. Orchidaceae VI (1920) 
p. 137. — Kinabalu. | 
P.trichoneurus Schltr. in Fedde, Rep. XXI (1925) p. 176. — Zentral-Oelebes. 
Phalaenopsis Denevei J. J. Sm. in Rec. Trav. Bot. Neerl. XXII (1925) p. 264. 
Fig. a—i. — Borneo (Th. A. de Neve kult. in Hort. Bog. n. 484). 
P. Forbesii Ridl. in Journ. of Bot. LXIII (1925) Suppl. p. 118. — Sumatra 
(Forbes n. 2210. 2521). 
P. violacea Teysm. et Binn. var. fypica Ridl. in Flor. Malay. Peninsula IV 
(1924) p. 156. — Perak. 
Philippinaea Schltr. et Ames gen. nov. in Ames, Studies in the Family Orchi- 
daceae VI (1920) p. 278. 
P. Wenzelii (Ames) Schltr. et Ames. c. p. 278 (= Adenostylis Wenzelii Ames). 
— Leyte (Wenzel nn. 0210. 0119. 0510); Mindanao (Elmer n. 13884. 16668). 
Pholidota Beccarii Schltr. in Notizbl. Bot. Gart. Mus. Berlin-Dahlem VIII. 
Nr. 71 (1921) p. 17. — Sumatra (Beccari s.n.). 
