Monographs Details: Trilepis lhotzkiana Nees ex Arn.
Authority: Maguire, Bassett. 1965. The Botany of the Guayana Highland. Mem. New York Bot. Gard. 12 (3): 1-285.
Description:Distribution and Ecology - Distribution. Known from Rio de Janeiro, Sao Paulo, Minas Gerais and Bahia. The record from Bahia is based on Lindmann (Bih. L. Svensk. Vet.-akad. Nya Handl. Stockh. 26, Afd. 3(9) : 35. 1900), who cited a Regnell's collection from the vicinity of Bahia, which has not been seen by us. BRAZIL . Without definite locality, Burchell 1107 ( G H ) . Sao Paulo: Ilha dos Alcatrazes, Luderwaldt & Pinto 9333 (NY, holotype of T. alcatrazensis). Rio de Janeiro: without definite locality, Sellow in 1814-15 (B, type of Fintelmannia restioides; F, photo), GJaziou 13313 (C, type of T. eximia, B, P, U S , isotypes; F, photo), Glaziou 12256 (B, K, P, syntypes or isosyntypes of Fintelmannia eximia), Glaziou 6764 (C, lectotype of Fintelmannia rohusta; P, isotype; F, photo), Gardner 149 (NY, U S ) ; near Rio de Janeiro, rocks, Riedel 933 (US) ; near Ipanema, on granite, von Luctzclhurg 15478A (F) ; Lagoa de Freitas, Glaziou 12298 (F, N Y, P, U S ) ; Nova-Friburgo, Leite 4279 (F) ; Corcovado, Vie 887 (B, syntype of Fintelmannia rohusta); Gavea, wet granite, alt. 800 m, von Luetzelhurg 43; Organ Mts., alt. 1700 m, von Luetzelhurg 6448. Distr. Federal: Pedra da Gavea, alt. 850 m, sloping ledge just below summit on east side, L. B. Smith 6443 (US); Minas Gerais: Turvo, Hoene d Gvhrt 17568; Serra de Gramma, alt. 1700 m, Chase 9569 (US).
Discussion:Fintelmannia restioides Kunth, Enum. PI. 2: 263. 1837.
Fintelmannia eximia C. B. Clarke, Kew Bull. Add. Ser. 8: 66. 1908. Syn. nov.
Fintelmannia robnsta C. B. Clarke, Kew Bull. Add. Ser. 8: 67. 1908. Syn. nov.
Fintelmannia ITiotzTciana (Nees) H. Pfeiffer in Fedde, Eepert. Sp. Nov. 18: 384. 1922. Invalid combination in synonymy.
Trilepis eximia (C. B. Clarke) H. Pfeiffer in Fedde, Eepert. Sp. Nov. 18: 385. 1922.
Trilepis lliotzMana Nees forma robusta (C. B. Clarke) H. Pfeiffer in Fedde, Eepert. Sp. Nov. 18: 384. 1922.
Trilepis alcatrazensis Gilly, Brittonia 5: 17. 1943. Syn. nov.
Pfeiffer (1922) and Gilly (1943) pointed out that broad-leaved T. eximia very closely resembles narrow-leaved T. ihotzkiana, and the latter author suggested that T. eximia might well be considered to be conspecific with the latter when the variability could be checked on sufficient amount of specimens. Our observations made on specimens available at major U. S. herbaria support Gilly's assumption. All specimens of the T. Ihotzkiaiia T. eximia complex well agree with each other in the length of fructifications and the dimension of contra-ligules, which are the most stable characters in the genus Trilepis. Leaf blades vary from 1.5 to 6 mm in width quite continuously. Similarly, as to the inflorescences, various degrees of branching have been seen. They range without discontinuity from almost simple spike on low culms to obvious panicle on tall culms. Field notes on labels state that tall T. cximia grows on wet rocks whereas T. Ihotzkiana of low stature occurs in more dry habitats. From these morphological-habital evidences we consider that T. eximia is not a biological entity but is an ecological expression. A photograph of the type of Fintelmannia rohusta at the Chicago Natural History Museum shows that it is intermediate. T. alcatrazensis was segregated from T. Ihotzkiana by its elongated caudex and longer, hyaline contra-ligules.
However, specimens examined showed intergradation as to the length of internodes or caudices. In Gilly s type of T. alcatrazensis the contra-ligules are not hyaline, and we cannot understand why Gilly segregated it from T. Ihotzkiana by the "hyaline" contra-ligules. The ovate-deltoid, more or less coriaceous ligules are a good match with those of typical T. lliotzkiana. The three names discussed here are, therefore, relegated to the synonymy under T. Ihotzkiana.
Distribution:Brazil South America