2320 



OCTOMERIA 



iniuato: petals lanceolate, labclluin lyrate, S-lobod, 

 floshv at%ase. otherwise hyaline, margin irregularly 

 ilenticulato, disk bioarinate. Oakes Ames. 



ODONTADENIA (Greek, toothed glamls). Apocy- 

 uacu,. IKto belongs the tropical yellow-flowered 

 climlx-r sold as Diphdanu Harrisii, which rivals in 

 be-uitv the well-knowni groenliouse allamandas. 



Tall shrubbv climbers or lianas: Ivs. opposite: cymes 

 loosc^ usually ample, rarely few-fld and scarcely 

 branched: eah-x .5-parlcd, the lobes remarkably blunt or 

 roundeil; corolla-lobes twisted in the ,.ointed bud ovcr- 

 lappinP to the right and twisted to t he eft ; s aniens 

 fixed at the top of the narrow part ol the tube fls. 

 yellow, whereiis those of Dipladenia are yellow only in 

 throat if at all. The genus is further distinguished from 

 Dipladenia by the shape of the calyx-lobes and by the 

 cup-shaped group of toothed glands below the pistU.— 

 Species 20-25, Trop. S. Amer. and Cent. Amer. 



erandiflora, Schum. (0. speciusa, Benth. Dipladhda 

 Hdrri.-ii, Hook.). Shrubby branched climber: largest 

 Ivs 10-1.") X 4-.=) in., oblong, tajiering, scarcely leathery, 

 feat her- veined, often purplish beneath; petioles stout, 

 scarcely 1 in. long: racemes axillary and terminal; 

 pedicels red, often 1 in. long, curved downward ; corolla- 

 tube with a roundish ba.se about i -jin. long and thick, 

 then suddenly constricted, then gradually widening into 

 a funnel-shaped fl. Brazil, Guiana, irimdad. B.M. 

 48-^5 —The fls. are fragrant, about 3 m. across, tunnel- 

 shaped, with 5 rounded, spreading lobes, and are more 

 or less streaked with red in the throat, at the base of the 

 lobes, and on the back of the tube. The treatment 

 for dipladenias (sec Dipladenia, Vol. II) should be 

 attemptcfl for Odontadenia, but O. grandiflora perhaps 

 grows at lower altitudes, and may require the treatment 

 usually given to hothouse vines. 



O. niMa. MucU. Arg. (O. cordata, A. DC.) from Trop. S. Amer., 

 is a t^-inine Rlabrous shrub with yellow corol a bearing a band of 

 vermilion below the middle o the narrow t"be: Ivs oblong or 

 elliDtie 4-6 in. long: fls. nodding on axillary pedicels, the tube 

 Sow and constricted at the colored part, the 5 lobes broad-ovate 

 and acute. It is referred to the genus Angadenia in B.M. »-^'5J l^- 

 nUida Miers), and is probably best understood when thus separated. 



WiLHELM Miller. 

 L. H. B.t 

 ODONTIODA (compounded from Odontoghsswn and 

 Cochlioda) Orchidacex. A genus established to contain 

 the hybrids between Odontoglossum and Cochhoda. 



The following are some of these hybrids: O. beechense 

 =0 Rolfea; x C. Noetzliana.— O. Bdhnhdffia (O. cir- 

 rhosumxC. vulcanica). Fls. blood-red, the sepals 

 and petals narrow, marked somewhat with white, 

 tinged slightly purple at base; lip with a yellow crest 

 with a few red spots.— O. Bdltonii=0. Yuylstekrae 

 X C. Noetzliana.— O. Brddshawix (O. orispum x G. 

 Noetzliana). Fls. resembling in shape those of the 

 first parent, but smaller; sepals and petals cmnabar- 

 scarlet; lip :3-lobed, whitish, the lobes scarlet-tipped, 

 and a spot of the same color in front of the yellow 

 crest. On. 71, p. .5.5. G.M. .56:337.-0. Bremi^ 

 O Hanyanum x C. Gharlcsworthu.— O. ChdrLes- 

 worthii (0. Harryanum x C. Noetzliana). FLs. resem- 

 bling in shape those of the cochhoda, ruby-crimson, 

 exc<pt the spiny yellow crest. Gn. 72, p. 301. J.H. 

 III. .56:.583. — 0. chelseiensis (O. crispum X C. vul- 

 canica). Us. intermediate in shape between those of 

 the parents, compactly arranged, carmine-rose, lightly 

 marbled with yellow on the sepals; lip light yellow, 

 3-lobed, the lobes tipped with carmine-rose, and a 

 flarker blotch in front of the crest. 0.11.17:48. G.M. 

 .52:70. Gn. 73, p. 112. — 0. chessinglonenstK^O. Rolfeaj 

 X C. Noetzliana. — 0. Co/jknonix=0. ardentissimum X 

 C. Noetzliana. O. 1013, p. 103.— ''>'. CoTne>/dna=0. 

 Lambeauianum X G. Noetzliana. — 0. Cravcnidrui (O. cor- 

 daturn y G. Noetzliana). Fls. more nearly resembling 

 in shape those of the cochhoda; sepals and petals red; 

 lip broafl, salmon-red, white in front, and with a yellow 



ODONTOGLOSSUM 



crest GM .51:2.5.-0. cuprea=-0. cristatum X C. 

 Noetzliana.-0. daJ(on«nsis=0. Phcebe x G. Noetz- 

 liana.— O. Devosddna (O. Edwardu X G. Noetzliana). 

 Panicle comptict; fls. crimson, the 3-lobed hp hghtej^t 

 the apex, and with a yeUow crest O.K. 16.41.— U, 

 cborlacun, (origin doubtful). Fls. medium-sized, 

 sciu-let; lip with pale yellow markings.— O. Horyi^U. 

 Andersonianum X C. Noetzliana.— (X gattonensis==0. 

 Kegcljanii x G. Noetzliana.-O. Goodsoni^ (ori^n 

 .loubtful). Fls. large, rosy, red, irregularly marked 



with cream-color; crest f, I'P yf'"^' p«°^"'?^.^l' - 

 marked in front. G.G. III. 45:195. G.M. 53.302. 

 0. Graireana^O. Rossii majus X C.. Noetzhana.- 

 (7rata=0. tripudians X G. Noetzliana.— O. tieal- 

 onensis (O. eirrhosum X C. sangmnea). Fl|- ^h't^, 

 the sepals and petals oblong-lanceolate, suffused at 

 the apex and spotted below with rosy purple; lip ovate 

 spreading, aculninate and recurved at the rosy purple 

 anex B M. 8133.— 0. Hemplinneana^O. eximium X 

 C. Noetzliana.— 0. Hyednx^O. ardentissimum xG. 

 Noetzliana— ^^0=0. Lindenu X G. Noetzliana. 

 ^ Sp^O.'"Queen Alexandra^' xG. Noetzliana. 

 — O. kcighleyends==0. eirrhosum X C Noetzliana.— O. 

 Lamhcauidna^O. Lambeauianum X C. fof ^z liana^- 

 0. Lecdna=0. speotabile X G. Noetzliana.-O. Luletia- 

 0. luteo-purpureum X C. Noetzliana.-^. macuio- 

 tissima=0. amoenum x C, sangmnea.^. M<5s«^= 

 O. maoulatum x G. Noetzliana.— 0.ne,)cnse=0. neva- 

 dense x G. Noetzliana.— 0. oakwoodiensis==OdonUoaa, 

 Bradshawiffi X O. perouUum.-O. rawd^nensis=0. 

 ardentissimum X Odontioda ^Charlesworthui. — O. 

 R6lfei=0. Hunnewellianum X C. vulcamca.---0. rose- 

 fieldiensis (O. triumphans Mr de B. C^^'^wsW ^ C 

 NoetzUana . Fls. scarlet, slightly shaded yeUow hp 

 yeUow, red-tinged, the basal ridges bright yeUow. 

 GG III 49:308.-0. Sdnderai^O. percultum X G. 

 Noetzliana.— 0. SchrMeri=0. crispum x Odontioda 

 Bradshawia?.-0. St^ymo^ra = Odiontioda Gharles- 

 worthii X Odiontioda Bradshawia. — 0. Seymoura- 

 O. Ilroskinneri X G. vulcanica.— O. speciosa={n.— 

 0. Thwditcsii (O. Harryanum x G. vulcanica). Sepals 

 and petals bronzy claret; lip lilac-purple with a yeUow 

 crest J H. III. 57:147.-0. Vuylstekex (O. nobile x 

 C. Noetzliana). Fls. about 2K in. across; sepals and 

 petals ovate-lanceolate, with a crimson base, the upper 

 portion white with red spots, the margin pmk; lip 

 fidtUe-shaped, yellow at base, the rounded lateral 

 lobes crimson, the rounded middle lobe white, crimson- 

 spotted. B.M. 7990. R.B.33:169 Gn.6.5, p. 433^ 

 O. wickhamensis^O. crispum X G. sangumea.-<>. 

 Wihonii = 0. Pescatorei X C. vulcamca.— O. lenobia. 

 G.C. III. 55:226. George V. Nash. 



ODONTOCIDIUM (compounded from Odontoglos- 

 sum i^nd Oncidium). Orchiddce^. A genus estabhshed 

 to contain the hybrids between Odontoglossum and 



"o! i;Xirda/u»ft=Odontoglossum Edwardu x Oncid- 

 ium serratum.— O. fo«.imdmtm= Odontoglossum cu- 

 rhosum x Oncidium Forbesu. G.M. 54:8/8. 



ODONTOGLOSSUM (Greek, tooth-tongue; in allu- 

 sion to the cre.st on the labellum) . Orchiddcex. Orchids 

 which on account of their handsome flowers are great 

 favorites of cultivators. 0. crispum is one oi the tmest 



of all orchids. . , , , ^- „j o l„rl 



Plants epiphytic, with short rhizomes and 2-lva. 

 pseudobulbs, often with sheathing Ivs at the base, 

 fls in few- to many-fld. racemes or panicles arising trom 

 the base of the pseudobulb; sepals and petals spreading, 

 free, or the lateral sepals rarely sonaewhat umt«d at 

 the base; base of the labellum ascending parallel to the 

 column and sometimes adnate to the latter; lateral 

 lobes small, often erect; middle lobe large, spreading, 

 variously .shaped; column elevate narrowed at^ he 

 base, longer than in Oncidium.— About 100 species, 



