Question: What do Pieris and Gaultheria have in common?

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Gaultheria oppositifolia: Gaultheria oppositifolia is a shrub in the heath family Ericaceae, endemic to New Zealand.  "G. oppositifolia" is a stout bushy spreading shrub that grows mostly in rocky places in the North Island, often observed beneath manuka scrub.  The pairs of oval leathery toothed leaves are attached directly to the twigs.  Late summer flowers are white and bell-shaped, and appear in clusters up to 10 cm long at the tips of twigs.  Leaves 3–6 cm long by 2–3 cm wide.  Autumn fruit is a dry red or white capsule.  Māori names include kama and niniwa.  Common name for the genus in New Zealand is snowberry.

Accessory fruit: An accessory fruit (sometimes called "false fruit", "spurious fruit", "pseudofruit", or "pseudocarp") is a fruit in which some of the flesh is derived not from the ovary but from some adjacent tissue exterior to the carpel.  Examples of accessory tissue are the receptacle of the strawberry, pineapple, common fig, and mulberry, and the calyx of "Gaultheria procumbens" or "Syzygium jambos".  Pomes, such as apples and pears, are also accessory fruits, with much of the fruit flesh derived from a hypanthium.  Other example could be the "anthocarps" specific to the family Nyctaginaceae, where most of the fruit comes from the perianth (floral whorls).

Gaultheria ovatifolia: Gaultheria ovatifolia is a species of shrub in the heath family which is known by the common names western teaberry and Oregon spicy wintergreen.  It is native to western North America from British Columbia to California, where it grows in high mountain forests.  This is a small, low shrub with stems only about 35 centimeters in maximum length.  The pointed, oval-shaped leaves are 2 to 3 centimeters long and green.  The plant bears small, solitary bell-shaped flowers in shades of white to very light pink with reddish bracts.  The flowers hang like tiny bells.  The fruit is a red berrylike capsule.  It was a food for the Hoh and Quileute of the Pacific Northwest.

Peiris: Peiris, Peries or Pieris is a Sinhalese surname.  It is a common surname in coastal area of Sri Lanka.  It is originated from Portuguese surname Peres and was spread across Sri Lanka during the time of Portuguese rule of the island.  The name has been adapted over time, hence the variation in its spelling.  Notable people with the surname include:

Gaultheria humifusa: Gaultheria humifusa is a species of shrub in the heath family which is known by the common names alpine wintergreen and alpine spicy wintergreen.  It is native to western North America, from British Columbia to California to Colorado, where it grows in moist subalpine mountain forests.  It is a low, spreading shrub which may be quite small, forming flat patches on the ground or amongst rock and leaf litter.  The stems are less than 20 centimeters in length and have small oval-shaped leaves one to two centimeters long.  It bears solitary bell-shaped flowers with white to light pink corollas and golden anthers which, after pollination, mature into bright to dull red berrylike fruit capsules.  The leaves and fruit of "Gaultheria humifusa" are edible.

Pieris (plant): Pieris ( or ) is a genus of seven species of shrubs in the family Ericaceae, native to mountain regions of eastern and southern Asia, eastern North America and Cuba.  Known commonly in North America as andromedas or fetterbushes, they are broad-leaved evergreen shrubs growing to 1 - tall and 3 - wide.  The leaves are spirally arranged, often appearing to be in whorls at the end of each shoot with bare stretches of shoot below; they are lanceolate-ovate, 2 - long and 1.0 - broad, leathery textured, and with an entire or serrated margin.  The young leaves in spring are typically brightly coloured.  The flowers are bell-shaped, 5 - long, white or pink, and arranged in racemes 5 - long.  The fruit is a woody capsule which splits into five sections to release the numerous small seeds.

Belenois java: Belenois java, the caper white or common white, is a small butterfly of the family Pieridae found in Australia, Indonesia, and Melanesia.  It is highly migratory and is often confused with the cabbage white ("Pieris rapae").

Gaultheria: Gaultheria is a genus of about 135 species of shrubs in the family Ericaceae.  The name commemorates Jean-François Gauthier of Quebec, an honour bestowed by the Scandinavian Pehr Kalm in 1748 and taken up by Carl Linnaeus in his "Species Plantarum ".  These plants are native to Asia, Australasia and North and South America.  In the past, the Southern Hemisphere species were often treated as the separate genus "Pernettya", but no consistent reliable morphological or genetic differences support recognition of two genera, and they are now united in the single genus "Gaultheria".

Gaultheria antipoda: Gaultheria antipoda, is a shrub in the family Ericaceae, native to New Zealand.  "G. antipoda" is an upright or spreading shrub that grows to 1–2 metres high.  The leaves are 5–15 mm long, and are leathery, shiny, with small serrations.  "G. antipoda" flowers around November, followed by white to red berries in late summer and autumn.  Common names include snowberry and fools beech.

Supporting paragraphs: Pieris (plant) Gaultheria
Answer: shrubs