The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Trixis chiapensis, T. grandibracteata, T. mexicana var.auriculata, T. mexicana var.macradenia, andT. parviflora are described as new, and the combinationsT. californica var.peninsularis, T. michuacana var.longifolia, andT. pringlei var.oligantha are proposed. The application of the namesT. inula andT. michuacana is discussed.
Two North American species ofClematis, sect.Atragene (L.) DC, are recognized.C. occidentalis (Hörnern.) DC. is divided into three varieties, native respectively to eastern North America, the Rocky Mountains, and the Cascade Mountains of Washington.C. columbiana (Nutt.) Torr. & Gray is divided into two extensively intergrading varieties, one prevailing in the southern Rocky Mountains, the other...
Although discounted in a monograph recognizingStylisma as distinct fromBonamia, pollen morphology is useful in distinguishing these genera, Light and scanning electron microscopy show that the pollen ofStylisma is characterized by an advanced 3-aggrecolpate aperture totaling 12 or 15 colpi, while pollen ofBonamia is typically of a primitive 3-colpate type.
Five species from Amazonia are described as new and illustrated:Sagittaria purusana Prance (Alismataceae),Coimarus wurdackii Prance (Connaraceae),Anthodiscus klugii Standley ex Prance (Caryocaraceae), andAnacampta pendula Markgraf andAmbelania longiloba Markgraf, the latter two members of the Apocynaceae.
Geographic variation inMouriri myrtilloides (Swartz) Poiret is analyzed on a morphological basis. Plants from Central America have medium puberulence, long calyx lobes, and short petioles and pedicels; those from Jamaica and Haiti are glabrous and have short calyx lobes, petioles, and pedicels; while those from Cuba have maximum puberulence, medium calyx lobes and pedicels, and long petioles. Glabrous...
Study of herbarium specimens, crossing behavior, chromosome conjugation, and live populations has shown that the endemic North American species ofHibiscus sect.Trionum comprise two distinct genetic groups.Hibiscus militaris Cav. andH. coccineus Walt, crossed readily and yielded fertile Fi’s. Also,H. incanus Wendl.,H. moscheutos L., andH. lasiocarpos Cav. crossed freelyinter se, and the hybrids were...
Chromosome numbers of 19 species ofThelypteris from Florida, California, Mexico, and Costa Rica are reported. First counts are given for two species belonging to sect.Goniopteris (x = 36), one species of sect.Leptogramma (x = 36) and seven species of the Opposita group (x = 29). The last named group is remarkable for the relatively low number of diploid taxa so far known. The base numbers 36, 35,...
The known fossil record of the Lythraceae has been amplified by recent studies in northern Latin America. A total of 18 genera is recognized in geologic strata ranging in age from lower Eocene to Recent, and among the 22 or 23 modern genera, seven have a documented geologic history. The oldest remains are from an Indo-Malayan Old World warm-temperate to subtropical vegetation preserved in the lower...
Eleven species ofTerminalia are indigenous in Fiji, Samoa, and Tonga ; the taxonomy is reviewed, with descriptions, keys, and distributional notes. Nine of the species occur in Fiji, and four of these,T. simulans,T. strigillosa,T. capitanea, andT. crebrifolia, are described as new.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.