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102 FIELDIANA: BOTANY, VOLUME 28 alto; foliorum petiolo modice valido, 12-25 cm. longo, supra mediam vagina 1-1.5 cm. lata sursum angustata apice obtusa inferne dilatata instructo; lamina coriacea, elliptic o-oblonga, apice abrupte breviter cuspidata, basin versus subcuneatim contracta, 16.5-32 cm. longa, 7.5-12 cm. lata, nervis primariis numerosis angulo 40 -45 a costa valida adscendentibus; pedunculo 8.5 cm. longo; spatha pallidoviridi ovata, apice abrupte acuminata, 7.5 cm. longa, 5.5 cm. lata; spadice lineari-cylindrico 4.5 cm. longo, 8 mm. crasso, stipite 8 mm. longo suffulto; pistillo 2.5 mm. longo, prismatoideo-hexagono, vertice truncato, 2.5 mm. lato; ovario uniloculari; ovulis 12-14. Leaves dark green and shining above, silvery pale green below; spathe pale green. Type in herb. Chi. Nat. Hist. Mus., collected on rich steep wooded slopes, Alto de Lirio, between Bramon and Las Delicias, state of Tachira, alt. 1890-2285 m., July 18, 1944, Julian A. Steyermark 57455 (2 sheets). This species is related to S maximum Engl. and S. multiovulatum (Engl.) N. E. Brown, but has a shorter spadix than S. maximum, and a shorter spathe and spadix than S. multiovulatum. It is further distinguished by the large leaves, the petiole vaginate only to above the middle, and a long peduncle. I rospatha savannarum Steyermark, sp. nov. Planta terrestris; foliis basalibus; foliorum petiolo 58-63 cm. longo; lamina hastato-sagittata, 17-20 cm. longa, lobo antico lanceolata 9.5-11 cm. longa, 2.3-3 cm. lata, lobis posticis anguste lanceolatis vel oblanceolatis, 8-10.5 cm. longis, 1.5-1.7 cm. latis, sinu angusto parabolico sejunctis, nervis primariis lobi antici infimis adscendentibus marginem patentibus, superioribus adscendentibus in apice exeundibus, nervis primariis loborum posticorum utrinque 3 adscendentibus, in latere interiore in margine exeuntibus, latere interiore in margine exeuntibus, latere exteriore dichotomis; pedunculo 7 dm. longo; spatha lanceolata longe caudata, 18.5 cm. longa, inferne expansa circ. 2 cm. lata, superne recurvata, intus purpureoviridi, extus brunneo-viridi; spadice lineari-cylindrico, 3.5 cm. longo, 4 mm. crasso; floris tepalis 4, spatulatis, 2.5 mm. longis, apice rotundatis 1.8 mm. latis; pistillo oblongo-cylindrico, 2 mm. longo; ovario uniloculari; ovulo unico; staminibus 4; filamentis latiusculis 1 mm. longis, 1 mm. latis. Leaves grass green above, dull green below; inflorescence erect; spathe recurved above, lavender-green within, bronze green without; spadix pale gray-green above, pale gray-lilac below with brownlavender spots; ovary 1-celled, the single ovule arising from the base at one side (Fig. 15). Type in herb. Chi. Nat. Hist. Mus., collected along rill in savanna, Sabana Grande, at southeastern base of Cerro Duida, Territorio
BOTANICAL EXPLORATION IN VENEZUELA - I 103 Federal Amazonas, alt. 200 m., August 23, 1944, Julian A. Steyermark 57853. This remarkable plant is distinguished from all other members of the genus by the unilocular 1-ovulate ovary, the usual condition being incompletely 2-locular with 2 or more ovules. It is further distinguished by the 4 perianth segments and 4 stamens of each flower, the short slender spadix, relatively narrow long-caudate spathe, and the narrow lanceolate to oblanceolate postical lobes and the relatively small antical lobe of the leaf blade. The spathe and spadix are shorter than in (/, caudata (Poepp. & Endl.) Schott and {/. sagittifolia (Rodsch.) Schott, and the leaf blades are shorter than in those species. It appears most closely related to (/. decipiens FIGURE 15 Urospatha savannarum Steyermark A, Spathe and part of spadix, lateral view (X 1/2); B, Perianth segment (X 9), upper half, from above, lower half, from side; C, Flower, from above (X 10>, D, Staminate cluster (X 15); E, Ovule (highly magnified; F, Pistil, showing ovule in position (X 6); G, Blade and upper portion of petiole (X 1/2).
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o 2 CM XI E> RAR.Y OF THL UNIVERSIT
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FIELDIANA: BOTANY A Continuation of
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NUMBER 1 LIST OF ILLUSTRATIONS TEXT
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PAGE 67. Emmotum ptarianum 342 68.
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CONTRIBUTIONS TO THE FLORA OF VENEZ
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BOTANICAL EXPLORATION IN VENEZUELA
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