PDF - University Library

More documents

Recommendations

Info

168 FIELDIANA: BOTANY, VOLUME 28 POGONIA stricta C. Schweinf. FIGURE 25 Pogonia stricta. 1, Plant (X 4/5); 2, Flower from the side (X 2); 3, Dorsal sepal (X 2); 4, Petal (X 2>, 5, Lateral sepal (X 2>, 6, Lip, from above (X 2 X
BOTANICAL EXPLORATION IN VENEZUELA - I 169 This species is apparently allied to Pogonia paludosa Reichb. f., but is dissimilar in having branched stems, short floral bracts and differently colored flowers with a dissimilar lip. Pogonia triflora C. Schweinfurth, sp. nov. Herba terrestris, gracilis. Caulis basi excepta glaber, parte inferiore remote bivaginata, parte superiore remote bifoliata. Folia parva, stricta, amplexicaulia; folium basale anguste ellipticum et acutum; folium superius linear!- la nceola turn et acuminatum. Racemus perlaxe triflorus cum brae te is floralibus conspicuis, strictis, lanceolatis vel ovato-lanceolatis, acuminatis. Flores parvi, rosei. Sepalum dorsale fornicatum, expansum anguste oblongolanceolatum, acutum. Sepala lateralia expansa similia. Petala sepalis similia sed paulo breviora et latiora, cum marginibus superioribus leviter et irregulariter denticulatis. Labellum expansum anguste oblongo-ovatum, prope apicem trilobatum; lobi laterales apice abrupte angulati; lobus medius triangulari-ovatus; discus fascia mediana lata percursus, basi minute bicallosus. Columna gracilis, perianthii segmentis distincte minor. Plant terrestrial, slender. Stem glabrous except at the very base which is apparently lanuginose, provided in the lower portion with two remote ovate or ovate-oblong amplexicaul sheaths and above with two remote leaves, about 19 cm. high up to the base of the floriferous portion. Leaves two, appressed, amplexicaul, narrowly elliptic or linear-lanceolate, 'acute or acuminate, the upper and larger blade about 3.6 cm. long and 6 mm. wide. Raceme very loosely 3-flowered, with the rachis about 5 cm. long. Floral bracts conspicuous, strict, lanceolate (lowermost) to ovate-lanceolate, acuminate, amplexicaul, deeply concave, the lowermost about 3.2 cm. long and 9 mm. wide. Flowers rather small, "rose-orchid", apparently nodding in age. Segments membranaceous. Dorsal sepal fornicate in natural position, when expanded narrowly oblong-lanceolate, acute, about 2.4 cm. long and 5 mm. wide. Lateral sepals closely similar. Petals similar to the sepals but slightly shorter and broader, about 2.2 cm. long and 6 mm. wide, with the upper margins lightly and irregularly denticulate. Lip deep rose, when expanded oblong-ovate in outline, distinctly 3-lobed near the apex, about 2.25 cm. long and 9 mm. wide; lateral lobes with abruptly angulate obtuse, spreading tips; mid-lobe small, triangular-ovate; disc traversed by a broad median thickened band (with irregular margins) which extends from the base about to the middle of the mid-lobe, minutely bicallose at the base. Column, slender, slightly dilated upward, about 1.6 cm. long (Fig. 26). Type in herb. Chi. Nat. Hist. Mus., no. 1203772, southwest-facing slopes between base of mountain at Quebrada Ka-hua-paru and Glycon swamp, Mount Roraima, state of Bolivar, alt. 1220-1980 m., October 1, 1944, Julian A. Steyermark 59014.
Page 2 and 3:
o 2 CM XI E> RAR.Y OF THL UNIVERSIT
Page 7:
FIELDIANA: BOTANY A Continuation of
Page 11 and 12:
NUMBER 1 LIST OF ILLUSTRATIONS TEXT
Page 13:
PAGE 67. Emmotum ptarianum 342 68.
Page 17 and 18:
CONTRIBUTIONS TO THE FLORA OF VENEZ
Page 19 and 20:
BOTANICAL EXPLORATION IN VENEZUELA
Page 21 and 22:
Page 23 and 24:
Page 25 and 26:
Page 27 and 28:
Page 29 and 30:
Page 31 and 32:
Page 33 and 34:
Page 35 and 36:
Page 37 and 38:
Page 39 and 40:
Page 41 and 42:
Page 43 and 44:
Page 45 and 46:
Page 47 and 48:
Page 49 and 50:
Page 51 and 52:
Page 53 and 54:
Page 55 and 56:
Page 57 and 58:
Page 59 and 60:
Page 61 and 62:
Page 63 and 64:
Page 65 and 66:
Page 67 and 68:
Page 69 and 70:
Page 71 and 72:
Page 73 and 74:
Page 75 and 76:
Page 77 and 78:
Page 79 and 80:
Page 81 and 82:
Page 83 and 84:
Page 85 and 86:
Page 87 and 88:
Page 89 and 90:
Page 91 and 92:
Page 93 and 94:
Page 95 and 96:
Page 97 and 98:
Page 99 and 100:
Page 101 and 102:
Page 103 and 104:
Page 105 and 106:
Page 107 and 108:
Page 109 and 110:
Page 111 and 112:
Page 113 and 114:
Page 115 and 116:
Page 117 and 118:
Page 119 and 120:
Page 121 and 122:
Page 123 and 124:
Page 125 and 126:
Page 127 and 128:
Page 129 and 130:
Page 131 and 132:
Page 133 and 134:
Page 135 and 136: BOTANICAL EXPLORATION IN VENEZUELA
Page 163 and 164: I BOTANICAL EXPLORATION IN VENEZUEL
Page 175 and 176: [ BOTANICAL EXPLORATION IN VENEZUEL
Page 185: BOTANICAL EXPLORATION IN VENEZUELA
Page 237 and 238:
Page 239 and 240:
Page 241 and 242:
Page 243 and 244:
Page 245 and 246:
Page 247 and 248:
Page 249 and 250:
Page 251 and 252:
Page 253 and 254:
Page 255 and 256:
Page 257 and 258:
Page 259 and 260:
Page 262:
Publication 667
show all

PDF - University Library

Create successful ePaper yourself

Delete template?

Save as template?