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. 2024 Feb 7:238:85-94.
doi: 10.3897/phytokeys.238.115494. eCollection 2024.

 Pipermotuoense, a new species of Piperaceae from Xizang, China

Fan Su  1   2   3 , Xiao-Wei Qin  1   2   3 , Rui Fan  1   2   3 , Lin Yan  1   2   3 , Xun-Zhi Ji  1   2   3 , Chao-Yun Hao  1   2   3
Affiliations

 Pipermotuoense, a new species of Piperaceae from Xizang, China

Fan Su et al. PhytoKeys. .

Abstract

Pipermotuoense X.W.Qin, F.Su & C.Y.Hao, a new species of Piperaceae from Xizang, China, is described and illustrated in this paper. The new species resembles P.yinkiangense and P.anisotis, but it can be readily distinguished from the compared species by several characteristics. Gonophyll leaves are chartaceous and the leaf secondary vein count is 7-9, with the outermost pair being very weak when there are nine veins. Additionally, the apical pair arises 2-4 cm above the base and the leaf base is asymmetrical, with bilateral petioles that cling and heal together. Pistillate floral bracts are sessile, with 3, 4 or 5 stigmas. The description of the new species includes photographs, detailed descriptions, notes on etymology, distribution and habitat, as well as comparisons with morphologically similar species.

Keywords: Asia; Paleotropical flora; Piperales; Sino-Himalaya; taxonomy.

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Conflict of interest statement

The authors have declared that no competing interests exist.

Figures

Figure 1.
Figure 1.
Pipermotuoense X.W.Qin, F.Su & C.Y.Hao, sp. nov. A habit B branch with infructescence C branch with staminate spike D branch with trophophyll leaf E adaxial and abaxial surface of gonophyll leaf F adaxial and abaxial surface of gonophyll leaf base G detail of the indument along the mid-vein of the gonophyll leaf adaxial and abaxial surface H pistillate spike I staminate spike J infructescence K close-up of portion of the staminate spike L close-up of portion of the infructescence M cross-section of infructescence N seed (side view). Photographs by Fan Su.
Figure 2.
Figure 2.
Line drawing of Pipermotuoense X.W. Qin, F. Su & C.Y. Hao A branch with infructescence B branch with staminate spike C magnified view of pistillate spike D magnified view of staminate spike E magnified view of infructescence F detail of the indument along the secondary nerves of the abaxial leaf surface G adaxial surface of gonophyll leaf H adaxial surface of gonophyll leaf base I abaxial surface of gonophyll leaf J abaxial surface of gonophyll leaf base K cross-section of infructescence L stamen M carpel N seed. Illustration by Fan Su, based on the holotype.
Figure 3.
Figure 3.
The geographical distribution of P.motuoense sp. nov., P.yinkiangense and P.anisotis.
See this image and copyright information in PMC

References

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