1958] 



THE BOTANY OF THE GUAYANA HIGHLAND PART III 



351 



oblongodanceolatis obtusis non exsertis, apicibus minute eiliatis, nervis ea. 7 ; 

 staminibus 6 ad basim in tubo 2-4 mm longo connatis; filamentis latis hyalinis, 

 0.5-1.0 mm longis; antheris 3-4 mm longis, oblongo-linearibus ad basim ipsam 

 4-thecatis, sursum 2-thecatis, ad apicem truneatis biporis ; ovario late obovate ea. 

 1.5 mm longo, 3-loeulari ; ovulis 2 per loculo ; stylo 6-7 mm longo, filiformi plane 

 trancato coroniformi-eiliato, 0.5 mm longo; seminibus ignotis. 



Type : herbaceous perennials, terete leaves, heads spherical, spikelets radiate, 

 acute, sepals basally orange, centrally white, pink-tipped, at maturity wholly 

 bright red becoming purplish, petals included, abundant and dominant in open 

 wet areas, Sabana Vcnaclo, Cano Pimichm, at 130-140 m alt., Rio Guainia, Terr. 

 Amazonas, Venezuela, April 14, 1953. Maguire & Wurdcock 35600 (holotype XY). 



Paratypes: Sabana Venado, April 14, 1953, Maguire # Wurdaclc 35633; Nov 23, 1953, 

 Maguire, Wurdaclc 4' Bunting 36369; sepals basally pink, apically white, abundant in open 

 Avet areas, Sabana Grande, Rio Pacimoni, at 120 m alt., Terr. Amazonas, Venezuela, Nov 29, 

 1953, Maguire, Wurdaclc 4- Bunting 36468; Nov 27, 1953, Maguire, Wurdack 4' Bunting 36639; 

 spikelets basally coral, apically white, maturing red, abundant, Sabana Grande, right bank 

 Rio Pacimoni, ca. 50 km above mouth at 120 m alt., Feb 7, 1954. Maguirt ?, Wurdaclc 4" Bunting 

 37560. 



4. Schoenocephalium cucullatum Maguire, sp. now Figure 6. 



Herbae terrestrcs perennes, eaudice brevissimo erecto, 1-5 cm longo, foliis 

 non compressis; foliis 4-5 (6), 30-50 cm longis; vaginis 10-14 cm longis, plus- 

 minusve distichis equitantibusque, subinduratis, marginibus anguste scariosis, 

 ad basim late dilatis; laminis linearibus 20-35 cm Longis, apicibus plus-minusve 

 abrupte falcato-aciiminatis, nervis a ea. 0.25 mm separatis; pedunculo 1 vel 

 aliquantum 2, 5-8 (10) dm longo, ea. 3 mm diam., valde nervatis ad apicem 

 compresso-dilato, 6-8 mm lato; capitulo sphaerico, 2.5-3.5 cm diam.; bractcis 

 involucralibus 2, late laneeolato-aciiminatis, 8-12 mm latis. 12-16 mm longis, 

 demnm deflexis; spiculis 40-50. radiatis obtusis albidis vel roseis vel corallinis 

 vel rubriflavis, ea. 18 mm longis. sessilibus; braeteolis 16-18, uradatis, exterior- 

 ibus 3-7 mm longis, 2-3 mm latis, ovato-oblongis vel oblom>is late obtusis (1) 

 3-5-nervatis, interioribus 8-14 mm longis. 3.0-3.5 mm latis. 5-nervatis, obtusis 

 valde cucullatis; sepalis 3, liberis, lanceolatis acutis, 16-18 mm longis ad basim 

 membranaccis. sursum induratis; petalis 3, ad basim in tubo 2-4 mm longo 

 connatis; laminis inclusis, lanceolatis obtusis, 8-10 mm longis; staminibus 6, 

 inclusis; filamentis ad basim in tubo bulboso 2 mm longo connatis, partibus 

 liberis ea. 2 mm longis; antheris 4-thecatis, ea. 3 mm longis, exigue furfuraceis, 

 minute 4-annulo-poris ; ovario late obovato, 3-loculari, ovulis 2 per loculo; stylis 

 teretibus, truneatis. 9-10 mm longis, ad apicem circumciliatis, eiliis ea. 0.3 mm 

 longis ; capsulis induratis ca. 4 mm longis, oblongo-ovatis ; seminibus ca. 2 mm 

 longis, maturis, 1 in qnoque loculo, compresso-subquadriprismaticis, bitruncatis 

 valde in longitudine striatis testa scariosa alveolata exfoliata. 



Type : perennial herb to 1 m high, caudex somewhat rounded with marcescent 

 leaf sheaths, peduncles usually 1, bracts paired, bracteoles yellowish, orange or 

 reddish at base, white apically, sepals pale j^ellow or coralline, abundant in open 

 marshy Yapaoana Savanna III, 140 m alt., Cerro Yapacana, Amazonas, Vene- 

 zuela, Dec 31, 1950, Maguire, Cowan & Wurdaek 30486 (holotype NY). 



Paratypes: Terr. Amazonas, Venezuela: perennial to 1 m high, bracteoles yellow, orange- 

 red at base or wholly pink, sepals yellow, abundant, Yapacana Savanna III, March 17, 1953, 

 Maguire 4- Wurdaclc 34529; Nov 20, 1953, Maguire, Wurdaclc 4' Bunting 36583; perennial 

 herb les than 1 m high, bracteoles basally coral, apically white, frequent marshy areas, Sabana 

 Hechimoni, Cano Hechimoni, Rio Siapa, Amazonas, Venezuela, 120 m alt., Feb 9, 1954, Maguire, 



