Question: While Acmena is a genus of shrubs and small trees, what genus is Laelia?

Context paragraphs:
Acmena: Acmena is a genus of shrubs and small trees in the myrtle family Myrtaceae.  They are related to guavas.  The name is derived from the Greek word for "plentiful."

Laelia: Laelia is a small genus of 25 species in the orchid family (Orchidaceae).  "Laelia" species are found in areas of subtropical or temperate climate in Central and South America, but mostly in Mexico.  "Laelia" is abbreviated L. in the horticultural trade.

Flacourtia: Flacourtia is a genus of flowering plants in the willow family, Salicaceae.  It was previously placed in the now defunct family Flacourtiaceae.  The generic name honors Étienne de Flacourt (1607–1660), a governor of Madagascar.  It contains 15 species of shrubs and small trees that are native to the African and Asian tropics and subtropics.  Several species, especially "F. indica", are cultivated as ornamentals and for their fruits.  The trunks of small trees are often guarded by branching spines.

Manzanita: Manzanita is a common name for many species of the genus "Arctostaphylos".  They are evergreen shrubs or small trees present in the chaparral biome of western North America, where they occur from southern British Columbia and Washington to Oregon, California, Arizona, New Mexico and Texas in the United States, and throughout Mexico.  They are characterized by smooth, orange or red bark and stiff, twisting branches.  There are 105 species and subspecies of manzanita, 95 of which are found in the Mediterranean climate and colder mountainous regions of California, ranging from ground-hugging coastal and mountain species to small trees up to 20 feet (6m) tall.  Manzanitas bloom in the winter to early spring and carry berries in spring and summer.  The berries and flowers of most species are edible.

Styphnolobium: Styphnolobium is a small genus of three or four species of small trees and shrubs in the subfamily Faboideae of the pea family Fabaceae, formerly included within a broader interpretation of the genus "Sophora".  It was recently assigned to the unranked, monophyletic "Cladrastis" clade.  They differ from the genus "Calia" (mescalbeans) in having deciduous leaves and flowers in axillary, not terminal, racemes.  The leaves are pinnate, with 9–21 leaflets, and the flowers in pendulous racemes similar to those of the black locust.  Necklacepod is a common name for plants in this genus.

Kunzea: Kunzea is a genus of plants in the family Myrtaceae and is endemic to Australasia.  They are shrubs, sometimes small trees and usually have small, crowded, rather aromatic leaves.  The flowers are similar to those of plants in the genus "Leptospermum" but differ in having stamens that are longer than the petals. Most kunzeas are endemic to Western Australia but are few occur in eastern Australia and a few are found in New Zealand.  The taxonomy of the genus is not settled and is complicated by the existence of a number of hybrids.

Corokia: Corokia is a genus in the Argophyllaceae family comprising about ten species native to New Zealand and one native to Australia.  "Corokia" species are shrubs or small trees with zigzagging (divaricating) branches.  In fact, "Corokia cotoneaster" is commonly known as "wire-netting bush".  The stems of the shrubs are dark when mature, covered with downy or silky hairs (tomentum) when young.  In spring, they produce clusters of small, star shaped yellow blossoms.  Berries are red or yellow.  The shrubs prefer forests and rocky areas, sun or light shade, reasonably well drained soil, and moderate watering.

Asteropeia: Asteropeia is a genus of flowering plants.  The genus contains 8 known species of shrubs and small trees, all endemic to Madagascar.  It is the sole genus in family Asteropeiaceae.  Members of the family are evergreen trees or shrubs.

Psorothamnus: Psorothamnus is a genus of plants in the legume family.  These are shrubs and small trees.  Many are known by the general common name indigo bush.  Some are referred to as daleas, as this genus was once included in genus "Dalea".  These are generally thorny, thickly branched, strongly scented bushes.  Most species bear lupinlike raceme inflorescences of bright purple legume flowers and gland-rich pods.  "Psorothamnus" species are native to the southwestern United States and northern Mexico.  The genus is paraphyletic and it has been proposed that the genus "Psorodendron" be reinstated to accommodate sections "Xylodalea", "Capnodendron", and "Winnemucca".

Understory: In forestry and ecology, understory (or understorey, underbrush, undergrowth) comprises plant life growing beneath the forest canopy without penetrating it to any great extent, but above the forest floor.  Only a small percentage of light penetrates the canopy so understory vegetation is generally shade tolerant.  The understory typically consists of trees stunted through lack of light, other small trees with low light requirements, saplings, shrubs, vines and undergrowth.  Small trees such as holly and dogwood are understory specialists.

Supporting paragraphs: Acmena Laelia
Answer: small genus of 25 species in the orchid family