Paspalum dilatatum (dallisgrass).

Paspalum dilatatum is a perennial grass native to South America that has been introduced into tropical and subtropical areas as a forage species/fodder. It is reported as invasive in Japan, Malaysia, Taiwan, Vietnam, Indonesia, Philippines, Hawaii, American Samoa, Australia, Fiji, French Polynesia, New Caledonia, New Zealand, Niue, Norfolk Island, Solomon Islands and the Minor Outlying Islands. In Hawaii and New Zealand, it forms dense stands that smother and prevent recruitment of native species.

Erechtites hieraciifolius (American burnweed).

Erechtites hieraciifolius is a fast-growing, annual herb that is native to North, Central and South America and the Caribbean. It is recorded as an environmental and agricultural weed in areas both within and outside its native distribution. Mature plants can produce large amounts of wind-dispersed seed, facilitating the colonisation of new areas. It is adapted to grow in a wide range of disturbed anthropogenic habitats and can outcompete other species to form dense populations. It may also spread as a seed contaminant of crops. Currently, it is listed as invasive in Hong Kong, Hawaii, the Galapagos Islands, French Polynesia, Palau, US Minor Outlying Islands, New Zealand and Hungary. It is also considered a potential weed in Australia, where it is under quarantine.

Basella alba (malabar spinach).

Basella alba is a herbaceous, perennial vine cultivated as a leafy vegetable and ornamental in tropical and subtropical and occasionally extending into temperate regions as an annual. It is listed as a potential environmental weed in Australia and as a weed of sugarcane fields on Iriomote Island, Japan. The species is considered an invasive species in Cambodia, China, Philippines, Taiwan, Hawaii, Cuba, Colombia, Ecuador, French Polynesia, Palau, Papua New Guinea and the US Minor Outlying Islands. Although no details of its invasiveness are provided, B. alba can grow rampantly in ideal conditions and can become invasive if not properly managed when it is in cultivation. Given that species reproduces easily, by seeds and vegetatively, and grows quickly, B. alba has a great capacity to become invasive in suitable areas. More information is needed on this species' invasiveness and its impacts to properly assess how it is affecting habitats and other species, and determine the risk it poses to countries where it is not yet invasive.

Coptotermes formosanus. [Distribution map].

A new distribution map is provided for Coptotermes formosanus Shiraki. Isoptera: Rhinotermitidae. Hosts: polyphagous. Information is given on the geographical distribution in Asia (China (Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hainan, Hong Kong, Hubei, Hunan, Jiangsu, Jiangxi, Macau, Sichuan, Zhejiang), Japan (Bonin Islands, Honshu, Kyushu, Ryukyu Archipelago, Shikoku), Taiwan), Africa (South Africa), North America (USA (Alabama, California, Florida, Georgia, Hawaii, Louisiana, Mississippi, North Carolina, South Carolina, Tennessee, Texas)), Central America and Caribbean (United States Virgin Islands), Oceania (Marshall Islands, US Minor, Outlying Islands).

Notes on the Structure of some Minor Outlying Occurrences of Littoral Trias in the Vale of Glamorgan.

ABSTRACTActive or recently-active, large-scale quarrying operations within the Carboniferous Limestone Series of this area, and ranging in location from the near-junction areas to points about half a mile removed from the southern boundary of the main littoral Trias outcrops, have afforded excellent sections displaying remnants of a former Triassic cover. It is considered unlikely that the latter outliers, of limited dimensions, occur in areas further removed than about one-third of a mile south of the existing limits of the main Triassic outcrops.