Monographs Details: Lagenocarpus rigidus (Kunth) Nees subsp. rigidus
Authority: Maguire, Bassett. 1965. The Botany of the Guayana Highland. Mem. New York Bot. Gard. 12 (3): 1-285.
Family:Cyperaceae
Description:Distribution and Ecology - Distribution. Southeastern Brazil and the Guayana ighland, common. VENEZUELA. Bolivar: La Gran Sabana, between Kun and Uadurara-Parú in valley of Rio Kukenan, south of Mt. Roraima, alt. 1065-1220 m, Steyermark 59047 (F) ; Mt. Roraima, stony slopes with sandy soil, Philipp Camp, alt. 5200-6000 ft, Tate 295; Mt. Roraima, Paulo, alt. 4000 ft, Tate 147; Ptari-tepui, northwestern slopes, savanna at alt. 1500 m, Maguire, Wurdack do Maguire 33849; Kavanayen, alt. 1300 m, Maguire, Wurdack & Maguire 33666; Kavanayen Mission, woodland slopes, savanna, alt. 1300 m, Magtiire, Wurdack ds Maguire 33711; Quebrada at Kavanayen, alt. 4000 ft, Maguire, Wurdack cO Maguire 33985; Uaipan-tepui, savannas west side of Uaipan, alt. 1400 m, Phelps & Hitchcock 326; Selvas de galeria del Rio Uairen, Sta. Elena, Tamayo 2839 (NY, US). Amazonas: Cerro Guanay, summit, alt. 1800 m, dry rocky slopes, Maguire, Cowan & Wurdack 31688; Northwestern ridge, above Camp Yutaje, alt. 1500 m, Maguire & Maguire 35377. BRAZIL. Without definite locality, Glaziou 15603 (C, syntype of L. warmingii; F, photo), Glaziou 13308 (C, type of Cryptangium arundinaceum; F, photo), Glaziou 17875 (C, type of L. giganteus f. polystachus; F, photo); Goias: Glaziou 22360 (NY, isosyntype of L. rigidus f. elatior); Parana: Jaguariahyva in campo arenoso ad rivulum, P. Dusen 13251 (NY, isotype of L. dusenii); Minas Gerais: without definite locality, Glaziou 20552 (NY, isotype of L, martii f. intermixta), Voyage d'Anguste de St.-Hilaire. Cat. B 1, no. 426 (NY, P) ; Serra do Cipo, 3-5 miles from Hotel Chapeu de Sol, alt. 3700 ft, Maguire, Maguire d; Pires 44688; Mun . Jaboticatubas, Serra do Cipo, Chapeu de Sol, L. B. Smith 7052 (NY, U S ) ; margine fossarum ad Fanado, Martius 37 (M, type of L. topazinus; F, US, photo) ; S. Joao d'El Rei, Glaziou 16933 ( F ) ; Diamantino, Barao, alt. 1170 m, 1 km along railroad on embankment among other grasses,. Mexia 5892 (F, N Y ); Serra de S. Jose d'El Rei, Glaziou 17873 (NY, isosyntype of L. oocarpus); Buenopolis, Serra do Cabral, Magalhaes 4446; Bello Horizonte,. Serra do Curral, Magalhaes 4500; Rio de Janeiro: Distr. Federal, Recreiro dos Bandeirantes, Lutz 614 (US) ; Distr. Federal, Praia de Sernambetiba, L. B. Smith 6379 (US); Rio de Janeiro, environs, Glaziou in 1874 (s.n.), Glaziou 16553 (C, K, syntypes of L. oocarpus; F, photo); Haut de Orgaos, Glaziou 16924 (F); Sao Paulo: Campo da Bocaina, Glaziou 11649 (NY, P ).

Discussion:Scleria rigida Kunth, Enum. PI. 2: 355. 1837. Lagenocarpus topasinus Nees, PI. Bras. 2(1) : 168. 1842. Syn. nov. Lagenocarpus martii Nees, PI. Bras. 2(1) : 169. t. 21. 1842. Syn. nov. Microlepis elatior Schrader ex Nees, PI. Bras. 2(1) : 167. 1842. Nomen invalidum ex synonymis. Microlepis rigidifolia Schrader ex Nees, PI. Bras. 2(1) : 168. 1842. Nomen invalidum ex synonymis. Microlepis bahiensis Schrader ex Nees, PI. Bras. 2(1): 169. 1842. Nomen invalidum ex synonymis. Lerisca rigida (Kunth) Schlechtendal, Bot. Zeit. 3: 476. 1845. Scleria topasina (Nees) Steudel, Syn. PI. Glumae. 2, 177. 1855. Scleria viridifolia Steud., Syn. PI. Glumae. 2, 177. 1855. New name for Lagenocarpus martii. Lagenocarpus neesii Bocklr., Linnaea 38: 426. 1874. Syn. nov. Cryptangium, arundinaceum Bocklr., Plora 65: 351. 1882. Syn. nov. Lagenocarpus crassipes Bockli-., Plora 63: 453. 1880. (fide Ind. Kew.) Cryptangium dioicum Bocklr., Allg. Bot. Zeitschr. 2: 142. 1896. Syn. nov. Lagenocarpus pauloensis Palla, Denkschr. Akad. Wiss. Wien Math.-Nat. Kl. 79: 198. 1906 Syn. nov. Lagenocarpus oocarpus C. B. Clarke, K e w Bull. Add. Ser. 8, 63. 1908. Syn. nov. Lagenocarpus mendoncae C. B. Clarke, Kew Bull. Add. Ser. 8, 63. 1908. Syn. nov. Lagenocarpus dioicus (Bocklr.) H. Pfeiff., Ber. Deutsch. Bot. Ges. 39: 131. 1921. Lagenocarpus tremulus Nees var. brevifolius H. Pfeiff. in Pedde, Eepert. Sp. Nov. 18: 75. 1922. Ex parte, excl. basionym. Lagenocarpus warmingii H. Pfeiff. in Pedde, Eepert. Sp. Nov. 18: 76. 1922. Syn. nov. Lagenocarpus scalariformis H. Pfeiff. in Fedde, Eepert. Sp. Nov. 18: 77. 1922. Syn. nov. Lagenocarpus martii Nees f. dioicus (Bocklr.), f. longirostris, f. longinux et f. intermixtus H. Pfeiff. in Fedde, Eepert. Sp. Nov. 18: 79. 1922. Lagenocarpus rigidus Nees f. gracilior, f. robustior et f. elatior H. Pfeiff. in Fedde, Eepert. Sp. Nov. 18: 80. 1922. Lagenocarpus rigidus Nees var. arundinaceus (Bocklr.) H. Pfeiff. in Pedde, Eepert. Sp. Nov. 18: 80. 1922. Lagenocarpus rigidus Nees var. arundinaceus H. Pfeiffer f. neesii H. Pfeiff. in Fedde, Repert. Sp. Nov. 18: 80. 1922. Lagenocarpus dusenii H. Pfeiff. in Fedde, Eepert. Sp. Nov. 18: 80. 1922. Syn. nov. Lagenocarpus giganteus H. Pfeiff. in Fedde, Eepert. Sp. Nov. 18: 81. 1922. Syn. nov, Lagenocarpus giganteus H. Pfeiff. f. polystachyus H. Pfeiff. in Pedde, Eepert. Sp. Nov. 18: 82. 1922.
Distribution:Brazil South America| Venezuela South America|