Plants named in 1942

Pouteria campechiana (commonly known as the cupcake fruit, eggfruit, zapote amarillo, yellow sapote or canistel) is an evergreen tree native to, and cultivated in, southern Mexico, Belize, Guatemala, and El Salvador. It is cultivated in other countries, such as India, Costa Rica, Brazil, the United States, the Dominican Republic, Australia, Cambodia, Vietnam, Taiwan, Indonesia, Sri Lanka, Nigeria, Cameroon and the Philippines. The edible part of the tree is its fruit, which is colloquially known as an egg fruit. The canistel grows up to 10 m (33 ft) high, and produces orange-yellow fruit up

Abies durangensis is a species of conifer in the family Pinaceae. It was described botanically by Maximino Martínez in 1942 and is found only in Mexico (Durango, Chihuahua, Coahuila, Jalisco and Sinaloa).

Picea chihuahuana, the Chihuahua spruce, is a medium-sized evergreen tree growing to 25–35 m tall, and with a trunk diameter of up to 1 m. It is native to northwest Mexico, where it occurs in 25 small populations in the Sierra Madre Occidental mountains in Chihuahua and Durango. It grows at moderate altitudes from 2300 to 3200 m, growing along streamsides in mountain valleys, where moisture levels in the soil are greater than the otherwise low rainfall in the area would suggest. The bark is thin and scaly, flaking off in small circular plates 5–10 cm across. The crown is conic, with widely

Gisekia is a genus of flowering plants. It is the only genus in the family Gisekiaceae and has seven species. The family was recognized in the APG II system (2003) and assigned to the order Caryophyllales in the clade core eudicots. This represents a change from the APG system (1998), which did not recognize this family. The AP-Website accepts this family with one genus. The genus was named by Carl Linnaeus after Paul Dietrich Giseke (1741-1796), a German botanist who studied under him, and who later published his notes on Linnaeus' lectures under the title Praelectiones in Ordines Naturales

Abies vejarii is a species of fir native to northeastern Mexico, in the states of Coahuila, Nuevo León, and Tamaulipas, where it grows at high elevations (2,000–3,300 m) in the Sierra Madre Oriental.

Pinus durangensis, the Durango pine or pino real is a pine tree species endemic to the Sierra Madre Occidental mountain range of north-western Mexico. This species is related to Pinus ponderosa (Ponderosa pine), and included in the same subsection Ponderosae.

Weberbauerocereus is a genus of ceroid cactus, considered to be intermediate between the genera Trichocereus and Cleistocactus. The genus is named after Augusto Weberbauer because of his extensive research in the Peruvian Andes. The genus is native to Bolivia and Peru.

Rhipsalidopsis gaertneri, synonyms Schlumbergera gaertneri and Hatiora gaertneri, is a species of epiphytic cactus which belongs to the tribe Rhipsalideae within the subfamily Cactoideae of the Cactaceae. Together with the hybrid with R. rosea, Rhipsalidopsis × graeseri, it is known, in English speaking countries in the Northern Hemisphere, as Easter cactus or Whitsun cactus and is a widely cultivated ornamental plant. It has received the Royal Horticultural Society's Award of Garden Merit.

Degeneria is a genus of flowering plants endemic to Fiji. It is the only genus in the family Degeneriaceae. The APG IV system of 2016 (unchanged from the APG system of 1998, the APG II system of 2003 and the APG III system of 2009), recognizes this family, and assigns it to the order Magnoliales in the clade magnoliids. Degeneria was named after Otto Degener, who first found D. vitiensis in 1942. Classical studies of native stands of Degeneria from Vanua Levu and Viti Levu islands were conducted more than 30 years ago. A 45-cent stamp issued in 1988 depicted a flowering branch of Degeneria

Stegnosperma is a genus of flowering plants, consisting of three species of woody plants, native to the Caribbean, Central America, and the Sonoran Desert. These are shrubs or lianas, with anomalous secondary thickening in mature stems, by successive cambia.

Pedicularis dasyantha, the woolly lousewort or arctic hairy lousewort, is a plant native to the high arctic areas of Svalbard, Novaya Zemlya and the bordering mainland, and the western Taymyr Peninsula. In Svalbard it is restricted to the main island, Spitsbergen.

Olea europaea subsp. cuspidata is a subspecies of the well-known olive tree (Olea europaea), which until recently was considered a separate species (Olea africana) and is still mentioned as such in many sources. Native to mostly dry areas across sub-Saharan Africa, West Asia, the Himalayan region and southern China, it has various common names, including wild olive, African olive, brown olive and Indian olive. It is the ancestor of the cultivated olive and it has been introduced to Australia, New Zealand and the US. It is an aggressive invasive species that can infest dry woodland areas,

Callisia fragrans, the false bromeliad, false bromeliad plant or golden tendril, is a flowering plant species of the genus Callisia, in the spiderwort family, Commelinaceae that is native to Mexico.

Quercus copeyensis is a species of oak endemic to the Talamancan montane forests of Costa Rica and Panama. It is commonly called Panamanian oak. Quercus copeyensis is a large deciduous tree up to 35 metres (115 feet) tall with a trunk frequently more than 100 centimetres (39 inches) in diameter. The leaves are often clustered at the ends of branches, with blades up to 15 centimetres (6 inches) long. It is often found with Quercus costaricensis in upper montane forests, up to 3,100 m (10,200 ft) in elevation.

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Austrocylindropuntia subulata is a species of cactus native to the Peruvian Andes. The Latin specific epithet subulata means "awl-like", referring to the shape of the rudimentary leaves. It is also known by its common names as Eve's pin and Eve's needle.

Aloe mubendiensis is a species of Aloe native to west Uganda.

Agave bovicornuta Gentry, is a plant in the genus Agave, native to mountainous regions in the Mexican states of Chihuahua, Sonora and Sinaloa. The common name Cowhorn Agave and the specific epithet refer to the prominent red spines along the edges of the leaves. Other common names include "lechguilla verde" The plant forms a solitary rosette with no suckers. Yellowish-green flowers are borne on a stalk up to 150 cm tall. The Tarahumara peoples who live in the region where the plant is found sometimes eat the leaves although they consider it inferior to other species. It is listed as

Merrilliopanax is a genus of flowering plants in the family Araliaceae, comprising 3 species of the subgenus Airampora. They are found in western China, Myanmar, northeast India, Bhutan, and Nepal. The genus name of Merrilliopanax is in honour of Elmer Drew Merrill (1876–1956), an American botanist and taxonomist, and also panax meaning "all-healing" in Greek. The genus was first described and published in Sargentia Vol.2 on page 62 in 1942.

Hyophorbe vaughanii is a species of flowering plant in the family Arecaceae that is endemic to Mauritius. Its natural habitat is subtropical or tropical dry forests.

Euphorbia pachypodioides is a species of flowering plant in the family Euphorbiaceae. It is endemic to Madagascar. Its natural habitat is rocky areas. It is threatened by habitat loss. It also has the binomial synonym Euphorbia antankara (Leandri, 1946). This small plant is available from several sources for enthusiasts. It is attractive, but slow growing.

Euphorbia neohumbertii is a species of flowering plant in the family Euphorbiaceae. It is endemic to Madagascar. Its natural habitat is rocky areas. It is threatened by habitat loss.

Euphorbia guillauminiana is a species of flowering plant in the family Euphorbiaceae. It is endemic to Madagascar. Its natural habitat is rocky areas. It is threatened by habitat loss.

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Delphinium bakeri, or Baker's larkspur, is a species of perennial herb in the buttercup family, Ranunculaceae. It is endemic to California in the United States, where it is a federally listed endangered species. It is known in the wild from one remaining occurrence near Salmon Creek in Sonoma County, where only seven plants remained as of March 2006. D. bakeri grows from a thickened, tuber-like, fleshy cluster of roots, to a height of 70 centimetres (28 in). The leaves occur primarily along the upper third of the stem and are green at the time the plant flowers. The flowers are irregularly

Cryptochloa is a genus of Neotropical plants in the grass family, widespread across much of Mexico, Central America, and South America. Species Cryptochloa capillata (Trin.) Soderstr. - French Guiana, Brazil Cryptochloa concinna (Hook.f.) Swallen - Colombia, Central America, southern Mexico Cryptochloa decumbens Soderstr. & Zuloaga - Panama Cryptochloa dressleri Soderstr. - Panama Cryptochloa soderstromii Davidse - Panama Cryptochloa strictiflora (E.Fourn.) Swallen - Central America, southern Mexico, Ecuador Cryptochloa unispiculata Soderstr. - Bolivia, Peru, Ecuador, Colombia, Brazil (Acre)

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Aloe kilifiensis is a species of plant found on the coastlines of Kenya and Tanazania up to 380 meters (1246 feet)

Aloe flexilifolia is a species of flowering plant in the family Asphodelaceae. It is native to the Usambara Mountains of north-eastern Tanzania.

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