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| Schiedea waiahuluensis W.L.Wagner, Weller, B.Nyberg, & A.K.Sakai, in Wagner, Weller, Sakai, Nyberg et Wood, 2024. |
Abstract
During a survey by the National Tropical Botanical Garden drone team, an enigmatic Schiedea was observed in December 2021on steep, rocky cliff faces of the Waiahulu Valley in the Waimea Canyon of Kaua'i. Subsequently, another survey was conducted in March 2022 and, by use of a remotely controlled cutting device suspended below the drone, the first herbarium specimen was collected, as well as a seed collection of an undescribed cliff-dwelling species of Schiedea. Detailed study of the collections and plants grown at the University of California, Irvine greenhouse showed that it had enlarged, somewhat whitish sepals similar to those of cliff-dwelling S. attenuata (the sole species in sect. Leucocalyx), yet differed significantly from all other species in the genus. It also shares with S. attenuata a woody habit, hermaphroditic flowers, coloured nectar and styles 5 to 7 or 8. We describe it here as S. waiahuluensis given the only known localities are on the cliffs of this valley and place it in an enlarged sect. Leucocalyx. With the discovery of this new species, there are 36 species in this Hawaiian endemic genus.
Key words: Caryophyllaceae, conservation, drone exploration, Hawaiian Islands, Kaua'i, Schiedea
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| Schiedea waiahuluensis A drone collected specimen Nyberg BN 023 with endemic Mirid on upper right bud B habit of plant in native habitat Williams AMW820, photo by Ben Nyberg C seed William AMW 821, photo by seedsofhawaii.org D flower of drone collected specimen, Nyberg BN 023, photo by KR Wood. |
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| Collecting Schiedea waiahuluensis via drone A population accessed on rope, with drone in background William AMW821, photo by Adam Williams B collecting arm hanging from drone, photo by Ben Nyberg C drone collecting arm with specimen, Nyberg BN023 photo by Ben Nyberg. |
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| Schiedea waiahuluensis habitat A Waiahulu branch of Waimea Canyon, drone photo, by Ben Nyberg B non-collected individual, drone photo by Ben Nyberg. |
Schiedea waiahuluensis W.L.Wagner, Weller, B.Nyberg, & A.K.Sakai, sp. nov.
Etymology: Specific epithet refers to the Waiahulu cliff region of Waimea Canyon, Kaua'i, the only known location where the new species is found.
Warren L. Wagner, Stephen G. Weller, Ann K. Sakai, Ben Nyberg and Kenneth R. Wood. 2024. Schiedea waiahuluensis (Caryophyllaceae), An enigmatic New Species from Kaua'i, Hawaiian Islands and the first species discovered by a drone collection system. PhytoKeys. 247: 111-121. DOI: doi.org/10.3897/phytokeys.247.130241
