PDF - University Library

More documents

Recommendations

Info

198 FIELDIANA: BOTANY, VOLUME 28 MAXILLARIA FIGURE 39 Maxillaria patula. 1, Plant (X 3/5); 2, Flower from the side, (about X 1-1/2); 3, Flower from the front, expanded with the lip detached (X 2>, 4, Lip, three-quarter view (X 4).
BOTANICAL EXPLORATION IN VENEZUELA - I 199 May 7, 1945, Julian A. Steyermark 62650, "leaves deep olive green above and dull green beneath". This species is habitally very similar to the West Indian Maxillaria croceorubens (Reichb. f.) L. O. Wms. (Ornithidium croceorubens Reichb. .) but the petals and lip are very different. Oncidium diffusum C. Schweinfurth, sp. nov. Herba epiphytica, venusta. Rhizoma abbre via turn. Pseudobulbi aggregati, ovoidei vel anguste ovoidei, valde complanati ut videtur, apice unifoliati. Folium la nee ola to-elliptic urn, acutum, in petiolum brevem sulcatum angustatum, membranaceum. Inflorescentia lateralis, pendula, diffusa, perlaxe paniculata cum ramis laxe paucifloris. Flores parvi, segmentis patentibus. Sepalum dorsale oblanceolatospathulatum, infra longe angustatum. Sepala lateralia similia sed majora, omnino libera, oblique spathulata, basi longe et anguste unguiculata. P eta la obovato-spathulata, quam sepala breviora sed latiora. Labellum suborbiculari-ovatum, basi cord a turn, supra conspicue constrictum lobulum subquadratum retusum formans; discus basi medio cum callo conspicuo apice tridentato ornatus. Columna brevis, utrinque ala lata transverse oblonga praedita. Plant epiphytic, graceful. Rhizome apparently abbreviated. Roots fibrous, filiform, glabrous, numerous. Pseudobulbs crowded, ovoid or narrowly ovoid, unifoliate at the apex, apparently strongly complanate, about 3.7 cm. or less long, surrounded at base by one or more pairs of distichous leaf-bearing sheaths which are evanescent as the plant develops. Leaf petioled; lamina lanceolate-elliptic, acute, cuneate below, membranaceous, about 13 cm. or less long and 2.6 cm. or less wide; petiole conduplicate, about 2 cm. or less long. Inflorescence lateral, elongate, very loosely paniculate, diffuse, pendent (detached in our specimen), apparently over 70 cm. long; branches short, about 5-8 cm. apart, loosely few-flowered, with slender fractiflex rachis. Bracts ovate, concave, acuminate with prominent mid-nerve. Flowers small for the genus, with widely spreading segments. Dorsal sepal oblanceolate-spatulate, subacute at the recurved apex, long-narrowed to a very slender base, about 9.2 mm. long and 3*4 mm. wide above. Lateral sepals similar, entirely free, obliquely spatula te, subacute with a recurved thickened apex, gradually narrowed to a long sulcate claw, about 11 mm. long and 3.9 mm. wide above. Petals obovate-spatulate, broadly rounded at the apex (sometimes with a short acute tip), narrowed to a short claw, about 7.9 mm. long and 5 mm. wide above. Lip suborbicularovate in outline, cordate at base, convex or reduplicate in natural position rather abruptly constricted in front to form a relatively small subquadrate terminal lobe which is bilobulate and apiculate, about 7.8 mm. long in greatest length (from either side of the base to the apex) and 8 mm. wide below; disc provided through the basal central half with a conspicuous callus which is irregularly toothed above and terminates in three teeth of which the middle one is longest. Column
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:
Page 137 and 138:
Page 139 and 140:
Page 141 and 142:
Page 143 and 144:
Page 145 and 146:
Page 147 and 148:
Page 149 and 150:
Page 151 and 152:
Page 153 and 154:
Page 155 and 156:
Page 157 and 158:
Page 159 and 160:
Page 161 and 162:
Page 163 and 164:
I BOTANICAL EXPLORATION IN VENEZUEL
Page 165 and 166: BOTANICAL EXPLORATION IN VENEZUELA
Page 175 and 176: [ BOTANICAL EXPLORATION IN VENEZUEL
Page 215: BOTANICAL EXPLORATION IN VENEZUELA
Page 262: Publication 667
show all

PDF - University Library

Create successful ePaper yourself

Delete template?

Save as template?