Meiogyne hirsuta is a plant in the custard apple family Annonaceae endemic to the Wet Tropics bioregion of Queensland, Australia. It is known from only a small number of collections from three widely separated locations.
Meiogyne hirsuta is a shrub up to tall, the twigs and small branches covered with fine soft hairs. Leaves are arranged alternately, on short petioles about long. They are lanceolate to oblanceolate and slight asymmetric at the base. They measure up to long by wide, with 13–16 pairs of lateral veins either side of the midrib.
The flowers are solitary, borne in the on pedicels (stems) up to long. The sepals are green, broadly ovate and about long and wide. The petals are pale yellow and finely hairy; there are two whorls of three petals each, the outer whorl slightly shorter at about long, the inner whorl about long and tinged purple at the base. There are 45–60 stamens up to long, and 5–16 carpels. The plant may flower when only high; the flowers emit an unpleasant odour.
The fruit is an aggregate fruit of botanical berries — in other words, it appears as a cluster of individual fruitlets, each of which has developed from one of the carpels in the flower. The fruitlets are orange and hairy, measure about long by wide, and contain up to five brown seeds about long.
Flowering occurs in November and December, fruit appear from January to March.
This species was first described in 1989 as Ancana hirsuta by the Australian botanist Laurence W. Jessup, based on material collected from all three localities where it is known to exist. In his paper, titled "The genus Ancana F.Muell. (Annonaceae) in Australia", Jessup noted that the distinctions between this genus and a number of others in the family are unclear, and in 2004 he formally transferred the species to its current placement in the genus Meiogyne.
The designated type specimen was collected at Henrietta Creek in the Wooroonooran National Park.
The genus name Meiogyne is from the Ancient Greek meíōn 'smaller', combined with gyne 'female'. It is a reference to the small number of carpels in the flowers.
This plant occurs in three widely separated locations, the most northerly is the Cedar Bay area near Cooktown. The next occurrence is about directly south, in the lower reaches of Mossman Gorge. The last occurrence is another SSE, in the foothills of the southern Atherton Tableland in the vicinity of the North Johnstone River.
It grows as an understorey plant in well-developed rainforest (complex mesophyll vine forest), at altitudes from near sea level to about . Its area of occupancy (AOO) is just .
This plant serves as a host plant for the green-spotted triangle butterfly, Graphium agamemnon.