Plants named in 1961

Leucaena leucocephala is a small fast-growing mimosoid tree native to southern Mexico and northern Central America (Belize and Guatemala). It is now naturalized throughout the tropics including parts of Asia. Common names include white leadtree, white popinac, horse tamarind, ipil-ipil, koa haole, and tan-tan. Leucaena leucocephala is used for a variety of purposes, such as fencing, soil fertility, firewood, fiber, and livestock fodder.

Pinus culminicola, commonly known as Potosí pinyon or Potosí Piñón, is a pine in the pinyon pine group, native and endemic to northeast Mexico. The range is highly localised, confined to a small area of high summits in the northern Sierra Madre Oriental in Coahuila and Nuevo León, and only abundant on the highest peak, Cerro Potosí (3713 m). It occurs at very high elevations, from 3000–3700 m, in cool, moist subalpine climate conditions.

Johannesteijsmannia is a genus of four species of palms found in tropical rainforests of the Malay Peninsula, Borneo and northern Sumatra. They are fan palms, usually growing without a trunk. The genus was named in honor of Johannes Elias Teijsmann, a Dutch botanist who was director of the Bogor Botanical Gardens from 1830 to 1869.

Stenocereus thurberi, the organ pipe cactus, is a species of cactus native to Mexico and the United States. The species is found in rocky desert. Two subspecies are recognized based on their distribution and height. The Organ Pipe Cactus National Monument is named for the species. Cacti are minimally adapted to particular thermal niches, and are tremendously vulnerable to seasonal precipitation.

Polypodium interjectum is a species of fern.

Acokanthera oppositifolia, the poison arrow tree, is a shrub used as the source of an arrow poison and to coat caltrops made from the sharp fruits of the puncture vine (Tribulus terrestris). All plants of the genus Acokanthera contain toxic cardiac glycosides strong enough to cause death. Acokanthera oppositifolia is widespread in southern and central Africa from Cape Province north to The Democratic Republic of the Congo and Tanzania. Acokanthera schimperi is employed for the same purpose. Unlike all other parts of the plant, the ripe fruit is sweet and edible. Unripe fruit are still

Leucanthemella is a genus of flowering plants in the sunflower/daisy family Asteraceae. It contains two species of herbaceous perennials found in marshy habitats. They have hairy foliage and composite daisy-like white flowers in late summer and autumn. They are hardy in the most extreme European climates, down to −20 °C (−4 °F) or less, but in cultivation favour a sheltered position. Leucanthemella serotina, autumn ox-eye or giant daisy, is native to Eastern Europe (between Poland, Montenegro, and Ukraine) and widely introduced in (north)western to south-central Europe. It is a vigorous,

Azadirachta excelsa, commonly known as sentang, is a tree in the mahogany family Meliaceae. The specific epithet excelsa is from the Latin meaning 'lofty'.

Xylanthemum is a genus of Asian plants in the daisy family. Species Xylanthemum fisherae (Aitch. & Hemsl.) Tzvelev - Uzbekistan, Kyrgyzstan, Tajikistan, Afghanistan Xylanthemum gilletii (Podlech) K.Bremer & Humphries - Iran Xylanthemum lingulatum (Boiss.) K.Bremer & Humphries - Iran Xylanthemum macropodum (Hemsl. & Lace) K.Bremer & Humphries - Pakistan Xylanthemum paghmanense (Podlech) K.Bremer & Humphries - Afghanistan Xylanthemum pamiricum (O.Hoffm.) Tzvelev - Uzbekistan, Kyrgyzstan, Tajikistan, Afghanistan, Iran Xylanthemum polycladum (Rech.f.) Tzvelev Xylanthemum rupestre (Popov ex

Stenocereus griseus, also known as the Mexican organ pipe, dagger cactus, pitaya, and pitayo de mayo, is a species of cactus.

Microcephala is a genus of Asian flowering plants in the chamomile tribe within the daisy family. Species Microcephala afghanica Podlech - Afghanistan Microcephala deserticola Podlech - Afghanistan Microcephala lamellata (Bunge) Pobed. - Irkutsk, Kazakhstan, Uzbekistan, Kyrgyzstan, Tajikistan, Turkmenistan, Xinjiang Microcephala subglobosa (Krasch.) Pobed. - Irkutsk Microcephala turcomanica (C.Winkl.) Pobed. - Uzbekistan, Kyrgyzstan, Tajikistan, Turkmenistan, Iran

Euphorbia cylindrifolia 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.

Didierea trollii is a species of Didierea native to Madagascar Spiny Forests in the province first described in 1961. It is one of the two species of the Didierea, with the other being Didierea madagascariensis.

Comastoma is a genus of flowering plants belonging to the family Gentianaceae. Its native range is Temperate Asia to Himalaya. Species: Comastoma cyananthiflorum (Franch.) Holub Comastoma dechyanum (Sommier & Levier) Holub

Alluaudia montagnacii is a rare species of flowering plant in the family Didiereaceae.

Stenocereus queretaroensis is a species of cactus from Mexico, including the state of Querétaro. It is cultivated for its fruit.

Oritrophium is a genus of Mesoamerican and South American flowering plant in the tribe Astereae within the family Asteraceae. Species

Monotropastrum humile is a species of myco-heterotrophic plant of the family Ericaceae, distributed throughout eastern Asia, from the Himalayas to the Islands of Japan. It lacks chlorophyll and is therefore unable to perform photosynthesis as most plants do; instead it gains sugars and nutrients from mycorrhizal fungi. It is sometimes referred to as Cheilotheca macrocarpa.

Ferocactus pottsii is a species of Ferocactus from Mexico. The specific epithet has also been spelt pottsi.

Diplazium sibiricum, otherwise known as mole-ladder is a species of fern. It is found in Siberia, across Russia, in Finland, and in northern Asia. They can be found on elevations between 30m-3000m.

Coffea abbayesii is an endangered species of flowering plant in the family Rubiaceae. It is endemic to Madagascar. It was described by Jean-François Leroy in 1961.

Begonia formosana is a species of flowering plant in the family Begoniaceae, native to Taiwan and the Ryukyu Islands. It is found growing in forests in shady, moist situations at elevations from 700 to 900 m (2,300 to 3,000 ft).

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Stenocereus pruinosus is a species of cactus. It is endemic to Mexico and occurs in the states of Veracruz, Puebla, and Oaxaca.

Stenocereus montanus, known as sahuira, is a species of columnar cactus in the family Cactaceae.

Solanum albornozii is a species of plant in the family Solanaceae. It is endemic to Ecuador.

Johannesteijsmannia altifrons is a species of flowering plant in the palm family. It is native to southern Thailand, Peninsular Malaysia, Borneo, and Sumatra. Flowers of this species smell of sour milk.

Geranium × magnificum, the purple cranesbill, is a species of hardy flowering herbaceous perennial plant in the genus Geranium, family Geraniaceae. The multiplication symbol × indicates that it is the result of hybridisation, in this case between Geranium platypetalum and Geranium ibericum. Growing into a clump 70 cm (28 in) high and broad, it has the decorative, deeply-lobed leaves typical of the genus Geranium. Violet-blue flowers with darker veins are borne relatively briefly in early summer. Extremely hardy, to below −20 °C (−4 °F), it is suitable for cultivation throughout all temperate

Dipterocarpus tempehes is a species of tree in the family Dipterocarpaceae. It is endemic to Borneo. The tree is found in swampy areas and along streams. It grows up to 45 metres (150 ft) high.

Diospyros whyteana (also known as the bladdernut, swartbas, wild coffee or umTenatane) is a small African tree of the ebony family. Bearing dark green, strikingly glossy leaves and creamy fragrant flowers, it is increasingly cultivated in Southern African gardens as an attractive and strong ornamental tree. It can attain a height of up to 6 m.