740 Annals of the Missouri Botanical Garden often differs in having petioles not at all whitish at Additional specimens seen. BELIZE. E1 Dorado, the base, blades which are typically semiglossy (vs. Schipp 386 (F, GH, K, MO, NY); Caves Branch, halfway up St. Herman's Hill, Whitefoord 1176 (BM, MO); Cayo, matte and subvelvety to weakly glossy in D. oerste- Stann Creek Districts, Hummingbird Hwy., betw. mi. 25dii), and especially in having the spadix with the 34, Dwyer & Diecknian 13008 (MO); Vaca Plateau, Vaca pistillate and staminate portions nearly contiguous Falls, Balick et al. 2080 (MO); Stann Creek, Cockscomb rather than well separated. Basin, Jaguar Pres., 10 km W of Maya Center, off S Hwy., Balick et al. 2716 (MO); Toledo, vic. of trail to Esperanza Herbarium material of Dieffenbachia oerstedii beginning 1 mi. N of Columbia Forest Station, Vanderveen may be confuse(l with D. seguine from the West 590 (MO); Columbia For. Stat., Dwyer 9920 (MO); San Indies. Both x,oee ies sometimes have blades of sim- Jose trail to Esperanza 1 mi. N of Columbia Forest Station, ilar shape, an(l lenth have petioles that are com- Croat 24250 (MO); San Jose, 6.T rlli. N of Columbia Forest Station, Dwyer 11184 (F); Bladen, ttichardson Creek, afparably sheatlle(l and sharply C-shaped on the free fluent of Bladen Branch, lower ptlt-t of Maya Mountains, portion. The lwo sI)ecies differ in stature, with D. Davidse & Brant 31879 (MO); alorlg Bladen Branch from Oerstedii beirlg IsUe h smaller and with blades matte, Richardson Creek to Quebrada (le Oro, Davidse & Brant often subvelvely, whereas those of D. seguine are at 32366 (MEXU, MO); Bladen, Solornon Camp, vic. of the jet. of Richardson Creek and 131a(len Branch, foothills of a minimum weakly glossy on the upper surface. The the Maya Mountains, Davidse & lXrant 32410 (MEXU, auricles on tle fIee-ending sheath of D. seguine are MO); Bladen, Bladen Nature Rexelve, ca. 2 air km N of both rounde(l al tlle apex, whereas in D. oerstedii upper Bladen Branch, Davidse 3.S$S02 (BRH, MO, SEL); one of the si({es of the sheath is almost rounded at Bladen Res., Ek Xux archaeolor,i( bll site, Davidse & Holst 36041 (MO, MY); upper Bladels 13ltlnch basin, along main apex and the otle! is usually acute at apex. How- Bladen Canyon, Davidse & Hollelll(l 36505 (BRH, MO); ever, the sheall, llsat subtend inflorescences in D. Columbia Res. near Crique N( rtot Whitefoord 3284 (BR, Oerstedii may 1sas e the apex auriculate on both MO). COSTA RICA. Alajuela: I (lr,tlna Hule, NE of Cerro Congo, Luteyn 3342 (DUIkE). > sides. (IIlz.l)ert & Rogerson 619 (A); canyon of Rio Cariblan(o (XX(l W slope and summit The tyl)e loctllily of Dieffenbachia oerstedii col- of ridge between Rio Cariblars( o (XX(l Quebrada Quicuyal, lected by ()e lst (l lemains in doubt but it may be SW of Cariblanco, GrayunI et (ll. f)/S)4 (MO); 3 km N of from Gualerzlll. 'I'he type specimen contains only La Luisa and 15 km N of Gteeia. !llfllr/)hy & Jacobs 1289 (DUKE, MO); San Carlos, Hal(l^ (t the name ''ScXsgtlisillo'' on the label. Also penciled Hel 1799 (MO); Cordillera de Tilaran, San Ralssols-Bajo Rodriguez, vic. La on the label ix llse name "Aguacato," perhaps add- Balsa, 8.9 mi. NW of centel ol Sals l4am6n, Croat 68069 ed at a latel (|lle. Engler (1915: 15) cited a col- (CR, K, MO); 10 km N of }3ija¢zla, Croat 36473 (DUKE, lection ma(le ly ()ersted from "Schottige Berwalder F, INB, MO); Upala, Brasilia l.r) kzl S of town, Finca de des Berges Aguae ate" (perhaps Cerro Aguacate in Mario Jir6n, Herrera 1636 (lNI3. M()); 22 km NE of Quesada by air, 4 km W of Muellx Stlls Carlos, Liesner 14102 Sierra de las Minas). He also listed "sanquinello" (MO); 22 km NE of Quesad;l l)y ait; 4 km W of Muelle (Engler, 191.5: 1 S) as a common name for D. oer- San Carlos, Liesner 14155 (13, K, M()); 2 km N of Santa stedii (note the (lifference in spelling from that orig- Rosa, Liesner et al 15035 (13. Ml'aXU, MO); Cant6n de inal label). Upala, Colonia Blanca, Finx (s lS io Negro, Rivera 1560 (INB, MO); rd. to Los Angelees. NW of church in San Ra- It is possiT)le that Dieffenbachia oerstedii occurs m6n, Stone 3317 (DUKE); Sars lltltssd)n-Bajo Rodriguez, 12 in the Lesser Anti]les and in French Guiana. How- km NW of Los Angelos, 16 kzl NW of San Ram6n, Croat ard 11744, pulpoltedly collected along the road be- 78830 (MO); vic. km markels I 1-12, ca. 7 km NW of Los tween Rousseau and Sulfur Spring on Dominica, Angelos, 11-12 km NW ol Stlls llam6n, Croat 78859 (INB, MO); Rio Grande de 'I'til( ol(s, vic. Capulin, Stanappears to l)e tllis species. Another specimen coldley 40223 (US); Rio Segundo, ( (l. I km N of Intl. Airport, lected in Frelle h Guiana (Croat 74319) along the Croat 36855 (MO); Rio Zapote. I, islopes of Volcan Mira- Cayenne-Regina highway, as well as cultivated ma- valles, W of Bijagua, Burger e t (ll. / /695 (F, MEXU, MO) terial going by the name "D. oerstedii variegata" San Carlos (Pital), 1 km N de lSa l jegua, Haniniel 20231 (Lyon 67-1086), appears to also represent this spe- (INB); Rio Samen hacia Upala, Aguilar 5204 (INB, MO); San Ram6n, ca. 13 km NW ol Surl Ram6n, Luteyn 3263 cies. The same taxon is in cultivation in Port-au- (DUKE); along rd. from San Ram6n, N of Balsa, ca. 13.8 Prince, Martinique (perhaps originating from km N of bridge over Quebrada Volio, Stevens 13761 (MO); French Guiana). Since the species is not apparently 3.5-4 mi. W of San Ram6n, Croflt. 467$S5 (INB, MO); Rio widespread in the areas mentioned, the field-col- Grande, San Isidro, Carvajal 273 (K, MO); Upala, 13.8 km N of Bijagua, Croat 36444 (MO); Upala Cant6n, Est. lected plants may in fact be plants escaped from Biol. San Ram6n, Dos Rios, Chinchilla 137 (INB, MO); cultivation. Living specimens studied of the mate- Upala, Rio Zapote, 4 km NNE of Bijagua, Croat 36297 rial from French Guiana and the cultivated material (MO); 3.5 km W of Fortuna, 2.5 km NW of New Volcan from the I,yon Arboretum are characterized by hav- Arenal, Taylor & Taylor 11660 (MO). Cartago: slopes of Miravalles above Bijagua, L. Goniez 19038 (MO); Cant6n ing the midrib creamy white from the lower 1/4 to de Turrialba, 6 km W of La Suiza on the rd. to Pacayitas, the upper 1/4 Of the blade. A similar feature is found Kennedy & Solonion 4629 (F, INB, MO). Guanacaste: in some populations of D. oerstedii in Costa Rica. SW slopes of Volcan Rinc6n de la Vieja and Volcan Santa
Volume 91, Number 4 2004 Croat Revision of Dieffenbachia Maria, Burger & Pohl 7825 (F); La Tejona, N of Tilaran, tel Pink Paradise, near sea level, 5 km S of bridge over Standley & Valerzo 46000 (US); PN Guanacaste Est. Mengo, Volcan Cacao, INBio 186 (INB, MO); Tilaran, San Pedro de Rio Chiquito, Monteverde, Haber & Bello 7191 (CR, MO); La Cruz-Santa Cecilia, Finca La Pazmompa, Rzos et al 109 (CR); PN Rinc6n, Rivera 623 (K, MO); Las Rio Agujas on rd. to Jaco, Croat 79075 (INB, MO); Sector Esquinas, vic. Fila Gamba hills behind Esquinas Rain Forest Lodge, along Quebrada Negra, at end of side rd. off of Villa Bricena to Golfito Rd., Croat & D. Hannon 79284 (CAS, CM, COL, F, MEXU, MO, NY, SEL, TEX, Nubes de Rio Chiquito l km NW of village on Cont. Divide, Haber & Atwood 9163 (INB, MO); PN Guanacaste, VEN, WU); Nicoya Peninsula, Curu, Sanders et al. 19322 (MO); Canton de Buenos Aires, Ujarras, headwaters of Rio Est. Cacao, Carballo et al. 47 (MO); Cord. de Guanacaste, Rinc6n de la Vieja, near refugee camp, along rd. NW of Kuiye, trail to Olan, Chacon 364 (F, MO); Coto Brus, Osa Peninsula, Sabanillas de Limoncito, L. G
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