Goniothalamus chartaceus

Goniothalamus chartaceus
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Magnoliids
Order:	Magnoliales
Family:	Annonaceae
Genus:	Goniothalamus
Species:	G. chartaceus
Binomial name
	Goniothalamus chartaceus; H.L.Li

Goniothalamus chartaceus is a species of plant in the family Annonaceae. It is native to Vietnam.[1] Hui-lin Li, the Chinese botanist who first formally described the species, named it after its papery (chartaceus in Latin) leaves.[2][3]

Description

It is a bush or small tree. It has smooth, black branches. Its petioles are about 5 millimeters long. Its olive-colored, smooth, oblong, papery leaves are 11-17 by 1.7-2.8 centimeters and have minute spots. The leaves have a pointed base, come to a short blunt point at their tips and have slightly rolled margins. The leaves have 10-12 lateral veins emanating from either side of the midrib. Its solitary flowers are in axillary positions on 1.2 millimeter long pedicels. The pedicels are subtended by 3 bracts that are 1-1.5 millimeters long and come to a point at their tips. Its 3 smooth, leathery, oval sepals are 9 by 4 millimeters and come to a point at their tips. Its flowers have 6 petals in two rows of 3. The outer, slender, lance-shaped petals are 1.8 centimeters long and come to a point at their tips. The inner, oval to triangular petals are 1 centimeter long and come to a shallow point at their tips. The flowers have numerous stamen about 1.5 millimeters long and numerous carpels that are covered in small, brown, matted hairs. [3]

Reproductive biology

The pollen of G. chartaceus is shed as permanent tetrads.[4]

References

"Goniothalamus chartaceus H.L.Li". Plants of the World Online. The Trustees of the Royal Botanic Gardens, Kew. n.d. Retrieved January 17, 2019.
Stearn, William (2004). Botanical Latin. Portland, Ore. Newton Abbot: Timber Press David & Charles. ISBN 9780881926279.
Li, Hui-Lin (1943). "Notes on the Flora of Indo-China". Journal of the Arnold Arboretum. 24 (3): 362–374. JSTOR 43781090.
Walker, James W. (1971). "Pollen Morphology, Phytogeography, and Phylogeny of the Annonaceae". Contributions from the Gray Herbarium of Harvard University. 202: 1–130. JSTOR 41764703.

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[1] "Goniothalamus chartaceus H.L.Li". Plants of the World Online. The Trustees of the Royal Botanic Gardens, Kew. n.d. Retrieved January 17, 2019.

[2] Stearn, William (2004). Botanical Latin. Portland, Ore. Newton Abbot: Timber Press David & Charles. ISBN 9780881926279.

[Li1943-3] Li, Hui-Lin (1943). "Notes on the Flora of Indo-China". Journal of the Arnold Arboretum. 24 (3): 362–374. JSTOR 43781090.

[4] Walker, James W. (1971). "Pollen Morphology, Phytogeography, and Phylogeny of the Annonaceae". Contributions from the Gray Herbarium of Harvard University. 202: 1–130. JSTOR 41764703.