Boea

For the town of ancient Greece, see Boea (Laconia).

Boea is a genus of plants in the family Gesneriaceae, with species originating from Australia, China, India, Malaysia, Myanmar, Philippines, Polynesia, Solomon Islands, Thailand, Papua New Guinea, Indonesia, Nepal, Bhutan, Cambodia, Vietnam and Laos.^[2]

Boea
Boea hygroscopica
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Lamiales
Family:	Gesneriaceae
Subfamily:	Didymocarpoideae
Genus:	Boea Comm. ex Lam. (1785)
Type species
Boea magellanica Lam.
Species[1]
12; see text
Synonyms[1]
Chleterus Raf. (1814)

For example, B. hygroscopica, also known as the Queensland rock violet in Australia, occurs in Cape York Peninsula and Northeast Queensland as far south as Rockhampton, from 60–900 metres (200–2,950 ft) elevation. It grows along creek beds, on moist banks, moss-covered rocks in rainforest, open forest, vine forest and gallery forest.^[3]

Some Boea species are known as types of resurrection plant due to their ability to survive desiccation (e.g. B. hygrometrica and B. hygroscopica).^[4][5]

• 
  Boea hemsleyana plant
• 
  Boea hemsleyana flowers
• 
  Boea hemsleyana seedlings

Cultivation

These cultivation notes are based on B. hygroscopica, a species from Northern Queensland, Australia.^[6]

B. hygroscopica grows to about 15 centimetres (6 in), and forms a dense, velvety clump that flowers over many weeks in the warm months.

A well-drained soil is suggested for this plant, achieved by using a potting mix with 20% sand content, and 5mm (~0.2 inches) of scoria or other drainage material in the bottom of the pot. A fertilizer with an NPK ratio of about 13.8:3.2:9.9, plus trace elements, is recommended.

This plant prefers bright, filtered light, possibly with some early-morning direct sun. It can be planted in the garden in a well-drained, consistently moist location.

The only major pests of this plant are chewing insects such as grasshoppers and caterpillars.

Species

12 species are accepted.^[1]

• Boea dennisii B.L.Burtt
• Boea hemsleyana B.L.Burtt
• Boea hians Burkill
• Boea hygroscopica F.Muell.
• Boea kinnearii (F.Muell.) B.L.Burtt
• Boea lawesii (F.Muell.) H.O.Forbes
• Boea magellanica Lam.
• Boea mollis Schltr.
• Boea morobensis C.Puglisi
• Boea resupinata Zich & B.Gray
• Boea rosselensis B.L.Burtt
• Boea urvillei C.B.Clarke

The Smithsonian also lists:^[2]

• Kaisupeea herbacea with the basionym: Boea herbacea
• Leptoboea multiflora with the previous synonym Boea multiflora