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164 FIELDIANA: BOTANY, VOLUME 28 of Peru. From the former it differs in the sheaths of the petioles extending all the way to the junction with the blade, the callus portion at the base of the blade not pubescent, the more rounded base of the leaf blades, the glabrate bracts, and the smaller flowers. Ischnosiphon Lasseriana Steyermark, sp. nov. Herba erecta stricta; caulibus minute verruculoso-tuberculatis, supra medium 0.5 cm. crassis; petiolis ad articulum vaginatis, articulo 7-9 mm. longo plerumque glabro, vaginis 6-6.5 cm. longis, glabris; laminis inaequilateralibus utrinque viridibus ovatis acuminatis, basi rotundatis, 8.5-13 cm. longis, 2.8-3.8 cm. latis, glabris; racemis solitariis. Type in herb. Chi. Nat. Hist. Mus., collected in lower portion of Quebrada O-paru-ma, tributary of Rio Pacairao, below Santa Teresita de Kavanayen, state of Bolivar, alt. 915-1065 m., November 15, 1944, Julian A, Steyermark 60557, Local name: "Curarima-yek". This species is related to /. surinamensis (Miq.) Koernicke of the Guianas and Brazil, and to / verruculosus Macbr. of Peru. In its solitary spikes it resembles the former, but differs from that chiefly in the verruculose stems, while from the latter it may be distinquished by the smaller leaves, and by the more finely verruculose stems, the projections being closer together and less conspicuously raised above the surface of the stem. Monotagma duidae Steyermark, sp. nov. Herba erecta metralis; foliis longe petiolatis, articulo subtereti 0.8-6.5 cm. longo, glabro vel pubescenti; vaginis basi vel interdum superne dense strigillosis; laminis infra cinereo-viridibus interdum atro-viridibus lineatis, inaequilateralibus ovato-lanceolatis, acuminatis basi obtusis, 32-45 cm. longis, 11-15 cm. latis, supra ad costam raediam plus minusve dense hirtello-pubescentibus, interdum ad superficiam leviter puberulis, aliter glabris; inflorescentia terminal!, folio frondoso suffulta; paniculis congestis ovoideis vel ovatoellipticis, 10-13 cm. longis, 6-8 cm. latis; bracteis subcoriaceis pallid o-viridibus vel cupreis suffusis, 2.2-2.4 cm. longis, strigillosis; floribus blancis, roseo-suffusis; bracteolis membranaceis ovatolanceolatis subacutis, 7 mm. longis; sepalis lineari-spatulatis, obtusis 5 mm. longis, 1 mm. latis; corollae tubo 1.5-2 cm. longo; lobis 5-6 mm. longis, 3 mm. latis, lobo exteriori anguste spatulato, 7 mm. longo; staminodio exteriori calloso 4 mm. longo; a nth era late obovato-oblonga; filamento late linear!. Type in herb. Chi. Nat. Hist. Mus., collected in second woodland after crossing Esmeralda Ridge on way to Duida, between Esmeralda Savana and southeastern base of Cerro Duida, Territorio Federal Amazonas, alt. 200 m., August 22, 1944, Julian A. Steyermark 57807, "leaves in rosette from cluster on stems; staminodia pale rose at
BOTANICAL EXPLORATION IN VENEZUELA - I 165 base, rest of petals white; bracts pale green; leaves grass dull green above, gray green below with dull dark green lines"; forest along Base River (Cano Negro), at southeastern base of Cerro Duida, alt. 225 m., August 23, 1944, Steyermark 57927, "herb in dense clump, 3 feet tall; leaves gray green below, deep green above; bracts brickcolored above; flowers white with rose-salmon"; San Carlos, Rio Negro, Territorio Federal Amazonas, alt. 100 m., 1942, Lletvelyn Williams 14243. This species is characterized by the combination of the short, dense inflorescence, strigillose bracts, relatively short sepals and corolla parts, densely puberulent upper portion of the petioles, and minutely puberulent midrib of the upper leaf surface. It is related to M. laxum (P. & E.) Schum. and M. exannulatum Schum., from which it differs in the shorter sepals, abbreviated, shorter inflorescence, strigillose bracts, finely puberulous upper portion of the petiole, and puberulous midrib of the upper leaf surface. Williams 14243 has the leaf surface and petioles more pubescent than the other two collections cited, but is apparently the same in all other respects ḂURMANNIACEAE Burmannia sanariapoana Steyermark, sp. nov. Caules erectes simplices vel ramosi, 11-23 cm. alti, inferne foliolosi, superne parce bracteosi; foliis 5-6, infimis ovato-lanceolatis, 3-5 mm. longis, caulinis lineari-lanceolatis vel lanceolatis, subulatis squamiformibus, caulem vaginantibus, 5-12 mm. longis, 0.5-1*5 mm. latis, prominenter uninerviis; bracteis caulinis adpressis remotis oblongo-lanceolatis, acutis, 3-5 mm. longis; floribus in racema capituliformi vel in cyma dichotoma secundis subsessilibus bracteatis; bracteis elliptic o-oblongis, 1 mm. longis, 0.5 mm. latis; ovario 1.3 mm. longo; perianthio obconico triquetro purpureo, apice pallidiori et viridi, superne alato, tubo triangulari 2-3.5 mm. longo, lobis exterioribus ovatis 1-1.3 mm. longis erectis alatis vel cristatis, supra marginibus inflexis apice cucullatis, lobis interioribus linearispatulatis vel anguste oblongo-linearibus, rotundatis, 4 mm. longis; staminibus sessilibus, infra bases loborum interiorum insertis, connective ellipsoideo, 2 cristis apicalibus sublanceolatis; antheris reniformibus; stylo cylindrico-filiformi; stigmatibus divaricatis infundibuliformibus cristatis (Fig. 24). Type in herb. Chi. Nat. Hist. Mus., collected in vicinity of Sanariapo, near Rio Sanariapo, tributary of Orinoco river, Territorio Federal Amazonas, alt. 100 m., September 8, 1944, Julian A. Steyermark 58466, "flowers purple with paler lavender and greenish at tip". This species is related to B. dasyantha Mart, of Brazil, but has smaller flowers and shorter and more scale-like leaves than that
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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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