Joan T. Pereira

Ridsdalea eucodon (synonym Rothmannia eucodon) is a species of plant in the family Rubiaceae found in Indo-China. Its name in Vietnamese is găng cơm or găng cao.

Crypteronia elegans is a species of flowering trees in the family Crypteroniaceae. It is found in Borneo (Sarawak).

Visit the page for more details.

Payena kinabaluensis is a tree in the family Sapotaceae. It is endemic to Borneo and known only from Malaysia's Sabah state. It grows up to 20 metres (70 ft) tall. Inflorescences bear up to seven flowers. The fruits are ovoid, up to 3 cm (1 in) long. The tree is named for Mount Kinabalu in Sabah. It is known from mountain slopes west of Mount Kinabalu and in Sugud Recreational Forest. Its habitat is mixed dipterocarp forest at about 900 metres (3,000 ft) elevation.

Payena khoonmengiana is a tree in the family Sapotaceae. It is endemic to Borneo and known only from Sabah. It grows up to 15 metres (50 ft) tall with a trunk diameter of up to 13 centimetres (5 in). The bark is reddish brown. Inflorescences bear one or two flowers. The fruits are ovoid, up to 8 cm (3 in) long. The tree is named for forest botanist Meng Wong Khoon. The tree is known only from the Tawai Forest Reserve and Sg Talibu Forest Reserve in Sabah. It has a small range, and its estimated area of occupancy (AOO) and extent of occurrence (EOO) are both 20 km2. Its habitat is lowland rain

Payena kapitensis is a tree in the family Sapotaceae. It is named for Kapit in Malaysia's Sarawak state.

Payena grandistipula is a tree in the family Sapotaceae. The specific epithet grandistipula means 'large stipules'.

Payena ferruginea is a tree in the family Sapotaceae. The specific epithet ferruginea means 'rust-coloured', referring to the indumentum.

Visit the page for more details.

Visit the page for more details.

Visit the page for more details.

Visit the page for more details.

Visit the page for more details.

Ridsdalea is an Asian genus of plants in the family Rubiaceae; it was named after Dr. Colin Ernest Ridsdale (1944–2017), who was an English botanist and specialist in tropical plants and the Rubiaceae family. The type species is Ridsdalea grandis (Korth.) J.T.Pereira, which was renamed from the basionym Gardenia grandis. Several other species have been reassigned from other genera: notably Rothmannia, which is now reserved for African species. Its native range is southern China, Indo-China, Malesia and New Guinea.

Visit the page for more details.

Visit the page for more details.

Visit the page for more details.

Visit the page for more details.

Visit the page for more details.

Visit the page for more details.

Visit the page for more details.

Visit the page for more details.

Visit the page for more details.

Visit the page for more details.

Visit the page for more details.

Visit the page for more details.

Visit the page for more details.

Visit the page for more details.

Visit the page for more details.

Visit the page for more details.