Plants named in 1998

Combretum indicum, commonly known as the Rangoon creeper or Burma creeper, is a vine with red flower clusters which is native to tropical Asia and grows in thickets, primary and secondary forest, and along river banks in the Indian subcontinent, Malaysia and the Philippines. It has since been cultivated and naturalized in tropical areas such as Burma, Vietnam, and Thailand. This plant is grown as an ornament.

The Muntingiaceae are a family of flowering plants, belonging to the rosid order Malvales. The family consists of three genera: Dicraspidia, Muntingia, and Neotessmannia, each with a single species. They are woody plants of the tropical regions of America. The older Cronquist system placed these genera in the family Tiliaceae, with which they share morphological similarities, but have no evolutionary affinity. Muntingia calabura is widely introduced in tropical regions, because of its edible fruit. Dicraspidia donnell-smithii and Neotessmannia uniflora are the other two species in the family,

Ceiba speciosa, the floss silk tree (formerly Chorisia speciosa), is a species of deciduous tree that is native to the tropical and subtropical forests of South America. It has several local common names, such as palo borracho (in Spanish literally "drunken stick"), or árbol del puente, samu'ũ (in Guarani), or paineira (in Brazilian Portuguese). In Bolivia, it is called toborochi, meaning "tree of refuge" or "sheltering tree". In the USA it often is called the silk floss tree. It belongs to the same subfamily as the baobab; the species Bombax ceiba; and other kapok trees. Another tree of the

The atemoya, Annona × atemoya, or Annona squamosa × Annona cherimola is a hybrid of two fruits – the sugar-apple (Annona squamosa) and the cherimoya (Annona cherimola) – which are both native to the American tropics. This fruit is popular in Taiwan, where it is known as the "pineapple sugar apple" (鳳梨釋迦), so it is sometimes wrongly believed to be a cross between the sugar-apple and the pineapple. In Cuba it is known as anón, and in Venezuela chirimorinon. In Lebanon, the fruit is called achta. In Tanzania it is called stafeli dogo ("mini soursop"). In Brazil, the atemoya became popular and in

Hornungia alpina (also Hutchinsia alpina or Pritzelago alpina) is a flowering plant in the family Brassicaceae. It is native to the mountains of Southern and Central Europe, as far south as northern Spain (Pyrenees and Cordillera Cantábrica), central Italy and North Macedonia , and is sometimes grown as an ornamental plant in gardens .

Nepenthes sibuyanensis is a tropical pitcher plant endemic to Sibuyan Island in the Philippines, after which it is named.

Amaryllis paradisicola is a species of bulbous perennial plant from South Africa.

Paeonia rockii, or Rock's peony, is a woody species of tree peony that was named after Joseph Rock. It is one of several species given the vernacular name tree peony, and is native to the mountains of Gansu and adjoining provinces in China. In Chinese, it is known as 紫斑牡丹 (pinyin: zǐbān mǔdān).

Gymnadenia rhellicani (common name: dark vanilla orchid or black vanilla orchid) is a European species of orchid.

Byblis aquatica is an insectivorous plant belonging to the genus Byblis, commonly known as the rainbow plants. It was described by Allen Lowrie and John Godfrey Conran in 1998, assigned to a group of annual north Australian species known as the "Byblis liniflora complex". It grows in semi-aquatic conditions and uses stalked mucilaginous glands (similar to those employed by the unrelated sundews and Drosophyllum) covering its leaf surfaces to attract, catch, and digest insect prey to supplement the poor environmental nutrient supply.

Yucca capensis L.W.Lenz is a plant in the family Asparagaceae. It is endemic to a small region of the Mexican state of Baja California Sur It is considered to be an endangered species by the IUCN due to its small range and threats of habitat destruction. The epithet refers to the type locale is near Cabo San Lucas in the southernmost part of the peninsula. Its common name is the Cape Region yucca. The species occurs at elevations of over 1000 m in the mountains of that region. It appears to be more closely related to the Yuccas of the Sierra Madre Occidental in Chihuahua and Sonora than it

Rotheca serrata, commonly known as the blue fountain bush, the blue-flowered glory tree or the beetle killer, is a species of flowering plants in the family Lamiaceae. It is native to India, Sri Lanka and Malaysia.

Prosthechea cochleata, commonly referred to as the clamshell orchid or cockleshell orchid, is an epiphytic, sympodial New World orchid native to Central America, the West Indies, Colombia, Venezuela, and southern Florida. It is also known as the black orchid in Belize, where it is the national flower. Each oblong discoid pseudobulb bears one or two linear nonsucculent leaves. The flowers are unusual in that though the labellum is usually below the column in the orchids, in the members of Prosthechea the labellum forms a "hood" over the column. This makes the flower effectively upside down, or

Merwilla is a genus of bulbous flowering plants in the family Asparagaceae, subfamily Scilloideae (also treated as the family Hyacinthaceae). It is distributed in southern Africa, from Zimbabwe to South Africa. This genus is named after the botanist Frederick Ziervogel Van der Merwe (1894–1968), who worked on this group.

Hammeria is a genus of flowering plants belonging to the family Aizoaceae. It is native to the Cape Provinces of the South African Republic. The genus name of Hammeria is in honour of Steven A. Hammer (b. 1951), American botanist, horticulturist and plant collector and specialist in Conophytum. It was first described and published in Cact. Succ. J. (Los Angeles) Vol.70 on page 204 in 1998. Known species, according to Kew: Hammeria cedarbergensis Klak Hammeria gracilis Burgoyne Hammeria meleagris (L.Bolus) Klak

Gymnadenia corneliana is a species of orchid with light-pink petals, found only in the Southwestern Alps in a small region near the France-Italy border. It was first catalogued by Swiss botanist Gustave Beauverd. Some specimens of this orchid display slightly darker petals, although this is uncommon. This flower, like many orchids in its genus, is said to emit a pleasant odor resembling that of vanilla.

Astragalus ampullarioides is a rare species of milkvetch known by the common name Shivwits milkvetch. It was previously classified as a variety of Astragalus eremiticus. It is endemic to Washington County, Utah, where it is known from only seven populations. Estimates of the total number of individuals range from 1000 to 4200. The species occurs in desert scrub and woodlands on the Chinle Formation. It is a federally listed endangered species. This is a perennial herb growing erect to a maximum height near half a meter. It produces about 45 flowers on an erect inflorescence. It is pollinated

Paphiopedilum tranlienianum is a species of orchid endemic to Cao Bằng.

Gymnadenia austriaca is a species of plant in the family Orchidaceae. It is endemic to the Alps and the Pyrenees, where it grows on calcareous alpine grassland from 1,500–2,500 metres (4,900–8,200 ft). It was first described by Teppner and Klein as a subspecies of Nigratella nigra (ssp austriaca) and was subsequently reclassified as G. austriaca as an apomictic member of the G. nigra group within the genus Gymnadenia.

Fessia is a genus of bulbous flowering plants in the family Asparagaceae, subfamily Scilloideae (also treated as the family Hyacinthaceae). It is distributed from Iran to Central Asia and Pakistan.

Cathariostachys madagascariensis, the Madagascar giant bamboo, volohosy, or voloto in Malagasy language, is a bamboo species found in Madagascar.

Ulmus ismaelis is a small tree discovered circa 1997 in southern Mexico by Ismael Calzada in riparian forest along the Mixteco River system in northeastern Oaxaca, where it grows among large boulders in the limestone canyons. The tree has since been found in Honduras and El Salvador. The tree is exceptional in its habitat: dry places, sometimes with less than 50 cm (19.7 in) per annum precipitation, and comparatively low altitudes of 450–750 m (1475–2460 ft).

Pseudomalmea is a genus of flowering plants belonging to the family Annonaceae. Its native range is Southern Tropical America. Species: Pseudomalmea boyacana (J.F.Macbr.) Chatrou Pseudomalmea darienensis Chatrou Pseudomalmea diclina (R.E.Fr.) Chatrou Pseudomalmea wingfieldii Chatrou

Pinus luzmariae is a species of conifer in the family Pinaceae. It is found in Honduras and southwest Mexico. It forms hybrids with Pinus herrerae which display hybrid vigor. Both species are placed in Pinus subsect. Australes.

Neoshirakia, known as milktree, is a genus of plants in the Euphorbiaceae, native to east Asia. It is part of a group first described in 1954 with the name Shirakia, but this proved to be an illegitimate name, unacceptable under the Code of Nomenclature. The genus was later divided, with its species distributed amongst three genera: Neoshirakia, Shirakiopsis, and Triadica. Neoshirakia contains only one known species, Neoshirakia japonica, known as tallow tree, native to China, Korea, and Japan (including Nansei-shotō). The name Shirakia thus became a synonym of Neoshirakia because S. japonica

Gymnadenia widderi is a species of orchid native to the central Alps and central Italy.

Euphorbia waringiae is a species of plant in the family Euphorbiaceae. It is endemic to Madagascar. Its natural habitats are subtropical or tropical dry forests and subtropical or tropical dry shrubland. It is threatened by habitat loss.

Dracaena tamaranae, or drago de Gran Canaria, is a species of flowering plant endemic to the island of Gran Canaria, related to the dragon tree, Dracaena draco, and other species of Dracaena from East Africa. Since 1972, specimens of dragon tree have been identified in Gran Canaria with certain peculiarities. These were initially identified as specimens of Dracaena draco. However, a more detailed study concluded that it corresponded to a new species.

Cycas edentata is a species of cycad with a widespread distribution across Southeast Asia. It originally referred only to a single population of Cycas from Calusa Island in Cagayancillo, Philippines.

Cycas changjiangensis is a plant species in the cycad order, Cycadales. It is endemic to Hainan Island of southern China. It grows at elevations of 600–800 metres (2,000–2,600 ft). It is found only in a small area in Bawangling 霸王岭国家森林公园, Changjiang County, western Hainan Province, China. Cycas changjiangensis has a trunk up to 50 cm (20 in) long but much of this is often subterranean. Leaves are pinnate, up to 130 cm (51 in) long, with spines along the rachis. Leaflets are in 40–70 pairs, with prominent midveins on both surfaces. The green to yellow-brown seeds are less than 2 cm (0.79 in)