From Plant Press, Vol. 18, No. 1, January 2015.
Dryopteris sweetiorum Lorence & W.L. Wagner
Dryopteris sweetiorum is a terrestrial fern known from collections made by Ken Wood on Fatu Hiva in the Marquesas Islands and published as a new species by David Lorence and Warren Wagner in 2011 in PhytoKeys (4: 5-51). The endangered species is only known from one small area (Teavapuhiau ridge to Mt. Touaouoho) on the small island of Fatu Hiva. The epithet sweetiorum was given in honor to Barbara K. and Cyrus B. Sweet III, who have generously supported scientific research at the National Tropical Botanical Garden (NTBG) and particularly the Vascular Flora of the Marquesas Islands project. The drawing by Tangerini was made from five herbarium specimens representing portions of the stipe, rhizome and frond. The specimens were photocopied and duplicated to make an entire frond with stipe and rhizome to a full height of 180 cm. Tangerini assembled the copies on a large table, taped them together, had the resulting collage photographed by Don Hurlbert (NMNH Photographic Services Unit), and reduced to 60 cm in print form. Tangerini traced the print in ink, added details of the pinnae and sporangia, and scanned the drawings into a publishable size image. A large framed print of Dryopteris sweetiorum was presented as a gift to Barbara and Cyrus Sweet in appreciation of their support given to the NTBG.