200 



PYCNOSTACHYS— QUERCU S 



PYCNOSTACHYS, Hook. (Labiat.). 



albido-violacea, De Wild. Pl. Bequaert. iv. 400 



(1928). — Congo Belg. 

 Bequaerti, De Wild. l. c. 393. — Uganda. 

 brevipetiolata, De Wild. l. c. 394. — Congo Belg. 

 butaguensis, De Wild. l. c. 389. — Uganda. 

 cinerascens, Rohyns & Lebriin in Rev. Zool. & Bot. 



^/r. xvi. 352(1 928) :P.Bequaerti,iDeH^/W. (1928). 

 De-Wildemaniana, Robyns & Lebriin, l. c. — Congo 



Belg. 

 Lindblomii, T. C. E. Fries in Notizbl. Bot. Gart. 



Berlin, Ki. 24 (1930). — Uganda. 

 longebracteata, De Wild. PL Beqiiacrt. iv. 388 



(1928). — Uganda. 

 ovoideo-conica, De Wild. I. c. 396. — Congo Belg. 

 Robynsi, De Wild. l. c. 398. — Congo Belg. 

 rotundato-dentata, De Wild. L c. 391. — Uganda; 



Congo Belg. 

 ruandensis, De Wild. l. c. 401. — Congo Belg. 



PYCNOTHRYX, M. E. Jones, Contrib. West. Bot. 

 No. 14, 33 (1912), in syn.: Drudeophytum, 

 Coult. 8;Rose(UmbeIlif.). 

 Clem.entis, M. E. Jones, l. c, in syn.: Drudeo- 

 phytum Clementis. 



PYCREUS, Beauv. (Cyperac). 



cimicinus, H. Pfeijf. in Fedde, Repert. xxviii. 17 



(1930): Cyperus cimicinus. 

 compressiformis, Cherni. in Biill. Soc. Bot. Francc, 



1926, Ixxiii. 552 (1927). — Madag. 



globosus, Haines, Bot. Bihar & Orissa, Pt. 5, 905 



(1924): Cyperus globosus. 

 longivaginans, Cherm. in Biill. Soc. Bot. France, 



1927, Ixxiv. 604 (1928): Cyperus longivaginans. 

 zonatissimus, Cherm. L c. 605 : P. zonatus. 



PYGEUM, Gaertn. (Rosac). 



ferreum, Craib in Keiv Bull. 1929, 106. — Siam. 

 glabrifolium, E. G. Baker injoiirn. Bot. 1924, Ixii. 



Suppl. 33. — Sumatra. 

 Kingianum, Craib in Keiv BulL 1930, 161. — Siam. 

 subglabrum, Merrill in Philipp. Joiirn. Sc. 1926, 



xxx. 395. — Ins. Philipp. (Luzon). 

 Tokangpengii, Merrill in Lingnan Univ. Sc. BulL 



No. 2, 54 (1930). — China (Kwangtung). 

 viride, E. G. Baker injourn. Bot. 1924, Ixii. Suppl. 



34. — Sumatra. 



PYGMAEOTHAMNUS, Robyns in Bull. Jard. Bot. 

 Brux.xi.29(i928). RUBIACEAE. 

 Chamaedendrum, Robyns, L c. 35: Plectronia 



Chamaedendrum . 

 longipes, Robyns, /. c. 37, cum descr. : Vangueria lon- 



gipes. 

 pilosus, Robyns, l. c. 36. — Natal; Transvaal. 

 Zeyheri, Robyns ex Good in Journ. Bot. 1926, Ixiv. 



Suppl. 2, 23; Robyns in Bull. Jard. Bot. Brux. 



xi. 30 (1928) : Pachystigma Zeyheri. 



PYRACANTHA, M. Roem. (Rosac). 



atalantioides, Stapf in Bot. Mag. t. 9099 (1926): 



Sportella atalantioides. 

 yunnanensis, Chittenden in Gard. Chron. 192 1, 



Ser. IIL Ixx. 325 : P. crenulata, var. yunnanensis, 



Vilm. 



PYRENACANTHA, Wight (Icacinac; Olacac, 

 Gen.PL). 

 Batesii, Exell injoiirn. Bot. 1927, Ixv. Suppl. i, 74: 



Monocephalium Batesii. 

 Staudtii, Hutchinson & Dalziel, FL W. Trop. Afr. 

 i. 456 (1928) ; Hutchinson & Dalziel in Kezv BiilL 

 1929, 23 : Chlamydocarya Staudtii. 

 Zenkeri, Exell in Journ. Bot. 1927, Ixv. Suppl. i, 

 74: Monocephalium Zenkeri. 



PYRETHRUM, Scop. (Compos.). 



Buschianum, Sosn. ex N. Busch in EngL Jahrh. 



Ixiii. 85 (1929), in obs., nomen. — Rossia. 

 cheilanthifolium, Sosn. in Biill. Mus. Caiic, Tiflis, 



X. 299 (1917). — Caucas. 

 Czerniakowskae, Kraschen. ex Czerniakozvska in 



Bull.Jard. Bot. Princ URSS, xxvi. 260 (1927); 



Kraschen. in Fedde, Repert. xxvi. 27 (1929). — 



Persia. 

 germanicopolitanum, Bornm. in Fedde, Repert. 



xxvii. 354 (1930), in obs., nomen; Bornm. & 



Heimerl, l. c xxviii. 70 (1930), descr. — As. Min. 



(Anatolia). 



PYRETHRUM:— 



GilUatii, Turrill in Keiv Bull. 1929, 228. — N. 



Persia. 

 Grossheimii, Sosn. in Beih. Bot. Centralbl. xliv. 11. 



243 (1927). — Transcaucas. 

 hissaricum, Kraschen. in Fedde, Repert. xxvi. 26 



(1929). — Bokhara. 

 khorassanicum, Kraschen. L c 27. — Persia. 

 Woronowii, Sosn. in Bull. Mus. Cauc, Tiflis, x. 294 



(1917). — Caucas. 



PYROLA, Linn. (Pyrolac. ; Ericac, Gen. Pl.). 



Maximowicziana, Makino in Journ.Jap. Bot. iii. 26 

 (1926) : P. elhptica, var. minor, Maxini. 



PYRONIA, Veitch ex Trabut in Journ. Heredity, 

 1916, vii. 416. ROSACEAE. 



[PyRUS + C YDONIA .] 



Danieli, Rehder in Journ. Arnold Arh. 1926, vii. 



148: Pirocydonia DanieH. 

 Veitchii, Guillaumin in Bull. Soc Dendr. France, 



1925, 64: Cydonia Veitchii. 



PYRRHEIMA, Hassk. (CommeHnac). 



fuscatum, Backer, Handb. Fl.Java, iii. 37 (1924): 

 Tradescantia fuscata. 



PYRRHOCACTUS, A. Berger, Kakteen, 215, 345 

 (1929). CACTACEAE. 

 centeterius, A. Berger, l. c 216, 345: Echinocactus 



centeterius. 

 curvispinus, A. Bergcr, I. c: Echinocactus curvi- 



spinus. 

 Strausianus, A. Bergcr, L c. 215, 345 : Echinocactus 



Strausianus. 

 tuberisulcatus, A. Bcrger, L c: Echinocactus 



tuberisulcatus. 



PYRUS, Linn. (Rosac). 



anglica, Druce, Brit. Pl. List, ed. 2, 41 (1928): 



Sorbus anglica. 

 arioides, Griff. Itin. Notcs (Posth. Papers, 11.), 194, 



No. 1060 (1848), nomen subnudum. — Bhutan. 

 arranensis, Druce, Brit. Pl. List, ed. 2, 41 (1928): 



Sorbus arranensis. 

 Arsenii, Arsene in Rhodora, 1927, xxix. 177: Sorbus 



Arsenii. 

 asiae-mediae, Popow in BulL Applied Bot., Lenin- 



grad, 1929, xxii. No. 3, 426, in clavi. — As. 



centr. 

 autumnalis, Koids. in Bot. Mag., Tokyo, 1929, 



xliii. 383: P. communis, var. autumnaHs, Sieh. 

 bitchuensis, Koidz. in Yoshino, FL Bitchuensis, 



27 (1929); et in Bot. Mag., Tokyo, 1929, xliii. 



385.— Japon. 

 canadensis, Farwell in Am. MidL Nat. 1930, xii. 



122: Mespilus canadensis. 

 congesta, Rehder, Man. Cult. Trees & Shrubs, 406 



(1927), hybr. — Cult. 

 crenulata, Geddes in Kew Bidl . 1929, 108. — Siam. 

 fragrans, Geddes, l. c 1930, 161. — Siam. 

 hakodatensis, Koidz. Fl. Symb. Or.-Asiat. 91 



(1930). — Japon. 

 hidaensis, Makino injourn.jap. Bot. iii. 20 (1926). 



— Japon. 

 insularis, Koidz. in Bot. Mag., Tokyo, 1929, xliii. 



385.— Jappn. 

 Kleinhofiana, Koidz. L c 384: Ficus pyrifolia, 



Burm.f. 

 Lecontei, Rehder injourn. Arnold Arb. 1926, vii. 28, 



hybr. — Cult. 

 leiostachya, Koidz. in Yoshino, Fl. Bitchuensis, 28 



(1929). — Japon. 

 Oldhamiana, Koidz. FL Synih. Or.-Asiat. 91 



(1930). — Corea. 

 oxyprion, Woronow in Bull. Jard. Bot. Princ 



URSS, xxvi. 608 (1927). — Caucas. 

 parvifolia, Blatter in Journ. Ind. Bot. Soc. ix. 207 



(1930). — Ind. or. (Waziristan). 

 porrigens, Druce, Brit. Pl. List, ed. 2, 41 (1928): 



Sorbus porrigens. 

 purpurea, Hort. ex A. B. Jackson, Trees & Shriihs 



Westonbirt, 154 (1927), hybr. — Hab.? 

 pyrifolia, Nakai in Bot. Mag., Tokyo, 1926, xl. 564: 



Ficus pyrifolia, Biirm. f. 

 Raddeana, Woronoiv in Btill. Jard. Bot. Princ. 



URSS, xxvi. 608 (1927). — Caucas. 

 subvestita, Farwell in Am. Midl. Nat. 1930, xii. 



122: Sorbus subvestita. 



PYRUS :— 



taochia, Woronotv in BuIl.Jard. Bot. Princ URSS, 



xxvi. 609 (1927). — Caucas. 

 Vavilovii, Popoiv in Bull. Applied Bot., Leningrad, 



1929, xxii. No. 3, 403, hybr. — As. centr. 



PYTHONIUM, Schott(Arac.). 



ecaudatum, Grijf. Itin. Notes {Posth. Papers, ii.), 

 185,^0.941^(1848). — Bhutan. 



PYXIDANTHERA, Michx. (Diapensiac). 



brevifoHa, Wells injourn. E. Mitchell Sc Soc xliv. 

 238 (1929).— U.S.A. (N. CaroHna). 



Q 



QUADRASIA, Elmer; Elmer, Leaflets Philipp. Obs. 

 \ii. 2656 (1915); Merrill, Enum. PhiHpp. Pl. ii. 

 430(1923), inobs. EUPHORBIACEAE. 

 [Claoxylon, Juss.] 



QUAMOCLIDION, Choisy (Nyctaginac). 



cordifolium, Ostcrh. itj Bull. Torr. Bot. CL 1928, 

 Iv. 75.— U.S.A. (Colorado). 



QUARARIBEA, Aubl. (Bombacac; Malvac, Gen. 



parvifolia, Standley in Publ. Field Mus. Nai. Hist. 

 Chicago, Bot. Ser. iy. 232 (1929). — Costa Rica. 



QUERCUS, Linn. (Fagac ; Cupulif., Gen. Pl.). 

 acutidentata, Koidz. in Bot. Mag., Tokyo, 1926, 



xl. 339 : Q. aliena, var. acutidentata, Maxitn. 

 boholensis, Merrill in Philipp. Journ. Sc 1926, 



x.xix. 476. — Ins. Philipp. (Bohol). 

 Buddii, Merrill, l. c. 1928, x.xxv. 6: Q. Robinsonii, 



MerriU. 

 cocciferoides, Hand.-Mazz. in Atiz. Akad. Wiss. 



Wien, Math.-Nat. 1925, Ixii. 128. — China 



(Yunnan; Szechuan). 

 comayaguana, Trelease in Journ. Arttold Arh. 1930, 



xi. 25. — Honduras. 

 Demai-ei, Ashe injoiirn. E. Mitchell Sc Soc xli. 268 



(1926). — U.S.A. (Arkansas). 

 dentato-mongolica, Nakai iti Bot. Mag., Tokyo, 



1926, xl. 164, hybr. — Corea. 

 dilacerata, Hickel & A. Catnus iti Lecotnte, FL 



Geti. Indo-Chine, v. 960 (1929). — Indo-China 



(Tonkin). 

 echinifera, Merrill iti Utiiv. Calif. Puhl. Bot. xv. 43 



(1929) . — Borneo . 

 Elmeri, Merrill, l. c. — Borneo. 

 garlandensis, Palmer in Jourtt. Arnold Arb. 1926, 



vii. 119, hybr. — U.S.A. (Arkansas). 

 Gravesii, Siidworth, Check List Forest Trees U. S. 



86 (1927): Q. texana, var. chisosensis, Sarg. 

 guayabalana, Trelease iti Piibl. Field Miis. Nat. 



Hist. Chicago, Bot. Ser. viii. 6 (1930). — Salvador. 

 Hawkinsii, Sudworth, Check List Forest Trees U. S. 



84 (1927), hybr. — U.S.A. (Tennessee). 

 Hui, Chun in Journ. Artiold Arb. 1928, ix. 126. — 



China (Kwangtung). 

 hunanensis, Hand.-Mazz. Symbolae Sinicae, Pt. 7, 



52 (1929). — China (Hunan). 

 incomita, Palmer in Journ. Arnold Arb. 1926, vii. 



120, hybr. — U.S.A. (Arkansas). 

 inconstans, Paltner, I. c 1929, x. 34, hybr. — U.S.A. 



(Texas). 

 inopina, Ashe in Rhodora, 1929, xxxi. 79. — U.S.A. 



(Florida). 

 kasaiensis, Leveille ex Rehder injourn. Arnold Arh. 



1929, X. 122, in syn. : Q. acuta. 

 Macnabiana, Sudworth, Check List Forest Trees 



U. S. 103 (1927), hybr. — U.S.A. (Arkansas). 

 Margaretta, Ashe ex Small, Fl. S.E.U.S. 355 



(1903).— U.S.A. (S. E. States). 

 mongoHco-dentata, Nakai iti Bot. Mag., Tokyo, 



1926, xl. 164, hybr. — Corea. 

 monimotricha, Hand.-Mazs. Symholae Sitiicae, 



Pt. 7, 41 (1929). — Yunnan; Szechuan; Upper 



Burma. 

 neo-Ashei, Bush in Bull. Torr. Bot. CL 1928, Iv. 



248.— U.S.A.(Texas; Oklahoma). 

 neopalmeri, Sudworth, Check List Forest Trees 



U. S. 92 (1927), hybr. — U.S.A. (Arkansas). 

 Nuttallii, Palmer in Journ. Arnold Arh. 1927, viii. 



52.— U.S.A. (S. E. States). 



