Two new species of Myrcia sect. Reticulosae (Myrtaceae) from the campo rupestre of Minas Gerais, BrazilSpringer Science and Business Media LLC - Tập 72 - Trang 393-401 - 2020
Thiago Fernandes, Duane F. Lima, João Marcelo Alvarenga Braga
Two new species of Myrcia sect. Reticulosae, M. carassana and M. revoluta are here described and illustrated. Myrcia carassana was firstly recognized in 1908 by A. F. M. Glaziou but never validly published. This species is similar to M. venosissima but differs by reddish trichomes, inflorescences botryoid or reduced to simple dichasia with longer peduncles, obconic floral buds and calyx lobes inte...... hiện toàn bộ
Diplachne and leptochloa (Poaceae) in North AmericaSpringer Science and Business Media LLC - Tập 31 - Trang 399-404 - 1979
J. McNeill
Most North American botanists includeDiplachne inLeptochloa but good evidence for this treatment has never been provided. The diagnostic characters of these two closely related genera of the tribe Eragrosteae are presented and the seven species ofDiplachne and six ofLeptochloa occurring in America north of Mexico are distinguished. Three new combinations are made inDiplachne:D. sect. Ipnum, D. pan...... hiện toàn bộ
A morphological study of PtilimniumSpringer Science and Business Media LLC - Tập 9 - Trang 136-145 - 1957
Nathan William Easterly
The genusPtilimnium, a native of the southeastern states, is composed of five species. Two of these were previously placed inHarperella because the plants bore phyllodes instead of finely dissected compound leaves. Investigation shows that these “Harperella” species,P. nodosum andP. fluviatile, have a haploid chromosome number of 6.P. capillaceum, P. nuttallii, andP. costatum have haploid numbers ...... hiện toàn bộ