Rhododendron macgregoriae

Rhododendron macgregoriae is a rhododendron species native to Indonesia and Papua New Guinea at altitudes of 500–3,350 m (1,640–10,990 ft). It is an evergreen shrub or tree purportedly growing to 15 m (49 ft) in height,^[1] with leaves that are ovate-elliptic or obovate-elliptic, 40–140 × 25–50 mm in size. The flowers are light yellow to orange.

Rhododendron macgregoriae
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Ericales
Family:	Ericaceae
Genus:	Rhododendron
Species:	R. macgregoriae
Binomial name
Rhododendron macgregoriae F.Muell.
Synonyms
Rhododendron calceolarioides Rhododendron gorumense Rhododendron hansemanni Rhododendron lauterbachianum Rhododendron vonroemeri

R. macgregoriae is relatively easy to grow in cultivation and a popular parent for hybrid cultivars. Today, nearly one hundred named cultivars are of "mac" descent.