摘要:

Fourteen Families, 21 genera and 23 species have been described in this work, as motifs identified on the ancient wooden carved and painted vases known as keros. These date from the early colonial or transitional epoch between the pre‐conquest Inca styles and those coming later with very strong Spanish influence.Although many of the well‐known food, medicinal, ornamental and ritual plants are depicted, a large number of plants known to the Incas, both wild and cultivated, is absent. Certain motifs have been impossible to identify, but it is hoped that future studies may throw considerable light on the decorative and symbolic motifs in this interesting group of va

ISSN:0024-4074    

DOI:10.1111/j.1095-8339.1981.tb00963.x

出版商:Blackwell Publishing Ltd    

年代:1981

数据来源: WILEY

摘要:

The discovery is reported of a new endemic species of wild rice in seriesSativaefrom northern Australia,Oryza meridionalisNg. This species has previously been confused withO. rufipogon, O. nivaraandO. salivaf.spontanea.Its geographical distribution is confined to northern Australia. It is also reproductively isolated from all other species of the seriesSativae.

ISSN:0024-4074    

DOI:10.1111/j.1095-8339.1981.tb00964.x

出版商:Blackwell Publishing Ltd    

年代:1981

数据来源: WILEY

摘要:

Thrasya paspaloidesHumb., Bonpl.&Kunth (Gramineae, Paniceae) is considered with respect to its status as the type species of its genus. Errors in Kunth's original description are identified and analysed in the light of opinions formed by Trinius and Nees; and by analogy with plants from collections subsequent to the type collection; morphological characters are discussed, and data provided for a comparison with the related speciesT. thrasyoides(Trin.) Chase andT. trinitensisMez, with whichT. paspaloidesis commonly confused. The geographical distribution of the three species is examined, together with the habitat. The conclusions are used to support proposal of a modification of the description ofT. paspaloidesand the selection of a lectotype.

ISSN:0024-4074    

DOI:10.1111/j.1095-8339.1981.tb00965.x

出版商:Blackwell Publishing Ltd    

年代:1981

数据来源: WILEY

摘要:

Developmental morphology of two natural populations ofCeratophylluminhabiting the waters of Delhi has been investigated under natural conditions and in aseptic culture. Both the populations show an extreme degree of adaptability to hydrophily. The embryo is unusually highly developed and contains 12–14 whorls of leaves and a few lateral buds. The two populations differ significantly in colour and dichotomy of leaf; structure and position of male flowers; number, position and colour of horns on the fruit; stylar length and distribution of sexes. The latter two parameters are probably responsible for the reproductive isolation of the populations, despite their sympatric association. On account of these differences, the two populations are assigned to two distinct speciesC. demersumL. andC. echinatumGray, respectively and their taxonomy is discussed;C. echinatumis a New World species not previously recorded from Indi

ISSN:0024-4074    

DOI:10.1111/j.1095-8339.1981.tb00966.x

出版商:Blackwell Publishing Ltd    

年代:1981

数据来源: WILEY

摘要:

Reports on 267 chromosomes counts are presented from material of known wild origin referable to 128 taxa of Compositae native to North America, or aliens growing there in a wild state.

ISSN:0024-4074    

DOI:10.1111/j.1095-8339.1981.tb00967.x

出版商:Blackwell Publishing Ltd    

年代:1981

数据来源: WILEY

摘要:

The central Australian flora currently contains 78 alien species, of which 17 are predominantly summer‐growing, 19 are southern winter‐growing species reaching roadsides, stockyards and watercourses in the southern Northern Territory and 42 are at present confined to gardens in Alice Springs. A further 11 species reach the far north of South Australia or die far southwest of Queensland but not the Northern Territory. The central Australian alien flora may be classified by growing season and drought‐tolerance, or broadly categorized on the basis of habitat and dispersal agent into ‘garden weeds’, ‘tourist weeds’ and ‘stock weeds’. Present ecological knowledge of central Australian aliens is limited, but indicates that whilst some will probably remain confined to better‐watered habitats, many are likely to spread into the arid areas, becoming obvious only after a succession of wet years. The central Australian alien flora is increasing at present and this increase is e

ISSN:0024-4074    

DOI:10.1111/j.1095-8339.1981.tb00968.x

出版商:Blackwell Publishing Ltd    

年代:1981

数据来源: WILEY

摘要:

The development of leaf stomata in species of OrchidoideaesensuGaray is agenous or hemimesogenous with a single mesogene cell. Both kinds of development occur in all 26 species studied and are found in a characteristic proportion which may differ markedly even between related species.Leaf and stem stomata develop similarly but surrounding cells may divide obliquely in the latter, so that perigene cells are formed. At maturity, mesogene and perigene cells resemble other epidermal cells, the stomata being anomocytic.In monocotyledons, the hemimesogenous development of stomata is previously known only from five orchid genera of the neottioid tribe CranichideaesensuDressler. This kind of stomatal development in monocotyledons is documented by micrographs for the first time. Mesogene and perigene cells are recorded for the first time in the Orchidoideae. The diversity of types of stomatal development in this group is emphasized.

ISSN:0024-4074    

DOI:10.1111/j.1095-8339.1981.tb00969.x

出版商:Blackwell Publishing Ltd    

年代:1981

数据来源: WILEY

ISSN:0024-4074    

DOI:10.1111/j.1095-8339.1981.tb00963a.x

出版商:Blackwell Publishing Ltd    

年代:1981

数据来源: WILEY