Salpixantha purdieana (Benth.) S. Moore, J. Bot.

Franck, Alan R. & Daniel, Thomas F., 2015, Taxonomic and Nomenclatural Notes on Six Genera of Acanthaceae in the West Indies, Proceedings of the California Academy of Sciences 62 (10), pp. 309-329 : 315-316

2. Salpixantha purdieana (Benth.) S. Moore, J. Bot. 65: 221. 1927. Neriacanthus purdieanus Benth. in Bentham and Hooker, Gen. Pl. 2:1096. 1876. TYPE.— JAMAICA. “Rocks nr Christiana, Manchester,” Purdie s.n. (lectotype, designated here: K! [ K000534390 ]; isolectotypes ᘥ!

[K000534389], K! [ K000569009 ] , P [ P00719541 ]); probable isolectotype : TCD!).

DISCUSSION.— Salpixantha purdieana is endemic to Jamaica. It has often been treated under Neriacanthus . Here it is included in Salpixantha because of the morphological ( Lindau 1900; Moore 1927; Profice 2002; McDade et al. 2005) and molecular similarities ( McDade et al. 2005) with S. coccinea , the type of Salpixantha . Several species in Central and South America have been included in Neriacanthus but do not appear to be congeneric with S. purdieana ( McDade et al. 2005) . Because S. purdieana is the type of Neriacanthus , these other Central and South American species of Neriacanthus may need to be accommodated under a different generic name or a different type for Neriacanthus could be conserved. FIGURE 2 (left). A. Lectotype of Dasytropis fragilis, Ekman 15236 [05-393]. B. Illustration of Dasytropis fragilis from

Urban (1924); 1. habit, 2. flower, 3. inside of flower, 4. stamen, 5. pollen, 6. gynoecium, 7. capsule, 8. seeds, 9. part of leaf showing cystoliths, 10. pili; copyright Wiley-VCH Verlag GmbH & Co. KgaA; reproduced with permission. C. Sapphoa rigidifolia, Ekman 15975 [05-395]. D. Holotype of Sapphoa rigidifolia, Ekman 6794 [05-396].

Three specimens of William Purdie’s plants of Salpixantha purdieana are at K: 1) a specimen from Bentham’s herbarium without flowers or specific locality data; it was possibly grown by Hooker at Kew (i.e., a note states: “Hooker 1844”); another note by William B. Hemsley states, “a small piece sent to Dr. I. Urban, Jan 1899,” which indicates that a type fragment probably exist- ed at B and was likely destroyed there; and it was annotated as “Type” by an unknown individual; 2) a specimen from W. J. Hooker’s herbarium with locality data, a date (December 1843), and notes (“A beautiful shrub, 8 feet high” and “rare”) that suggest a plant collected in the field; and 3) a robust specimen from Hooker’s herbarium with flowers, locality information (apparently written in W. J. Hooker’s hand) that concurs with that in the protologue (i.e., “rupibus provinciae Manchester Jamaicae;” Bentham 1876) and matches the location provided by J. D. Hooker (1876), and sketches of plant parts that are nearly identical to the illustrations in the plate published by J. D. Hooker (1876, Fig. 3B ; this plate is also possibly original material as it was published in the same month, May, as the protologue). The latter specimen from W. J. Hooker’s herbarium is chosen as the lectotype because of the greater amount of information on the sheet that conforms to the protologue.

SAMUELSSONIA Urb. & Ekman, Ark. Bot. 22 A:96. 1928. Type.— Samuelssonia verrucosa Urb.

& Ekman.

Figures

FIGURE 3. A. Lectotype of Salpixantha coccinea from Hooker (1845); 1. inside of flower, 2. stamen, 3. cross-section of ovary, 4. longitudinal section of ovary. B. Illustration of Salpixantha purdieanus from Hooker (1876); 1. flower, 2. inside of flower, 3. stamen, 4. gynoecium, 5. section of ovary. C. Isolectotype of Samuelssonia verrucosa, Ekman H-9232 [05- 398]. D. Lectotype of Samuelssonia verrucosa, Ekman H-9232 [05-397].