A NOMENCLATOR OF MEXICAN AND CENTRAL 



Las Nubes road, region of Santa Marta, 1200 

 m, 3 Dec 1898, H. H. Smith 1810 (Holotype F 

 138660; Isotypes MO, NY, n.v., US, n.v., W, 

 n.v., Y, n.v.). Simira. — Elaeagia myriantha 

 (Standi.) C. M. Taylor & Hammel 



Houstonia L., Sp. PI. 1: 101. 1753. Type: 

 Houstonia caerulea L. [Herein treated as a 

 synonym of Hedyotis L., although some 

 authors (e.g., Terrell, 1996) recognize 

 Houstonia as a genus.] 



Houstonia acerosa (A. Gray) Benth. & Hook, f, 

 Gen. PI. 2: 60. 1873. Hedyotis acerosa A. 

 Gray, PI. Wright. 1: 81. 1852. Type: U.S.A.: 

 Texas, high prairies from Live Oak Creek to 

 Las Moras, C. Wright 237 (Holotype GH, 

 n.v.). Oldenlandia. — Hedyotis acerosa A. 



Houstonia acerosa (A. Gray) Benth. & Hook. f. 

 subsp. polypremoides (A. Gray) Terrell, 

 Brittonia31: 168. 1979. Houstonia 

 polypremoides A. Gray, Proc. Amer. Acad. 

 Arts 21: 379. 1886. Type: MEXICO: 

 Chihuahua, Santa Eulalia Mountains, 26 Sep 

 1885, C. G. Pringle 356 (Lectotype GH, 

 n.v.; Isolectotypes F, MO (photos MEXU, 

 PTBG), US (photos MEXU, PTBG); 

 designated by Lewis, 1968).— Hedyotis 

 acerosa A. Gray var. polypremoides (A. 

 Gray) W. H. Lewis 



Houstonia angustifolia Michx., Fl. Bor. Amer. 

 1: 85. 1803. Type: U.S.A.: Florida, in 

 submaritimus Floridae, collector not cited 

 (Holotype presumably P, n.v.).— Hedyotis 

 nigricans (Lam.) Fosberg 



Houstonia angustifolia Michx. var. scabra S. 

 Watson, Proc. Amer. Acad. Arts 18: 97. 1883. 

 Type: MEXICO: Coahuila, Saltillo, Caracol 

 Mountains, 1-15 Apr 1880, E. Palmer 410 

 (Holotype GH, n.v.; Isotype US (photos 

 MEXU, PTBG)).— Hedyotis nigricans 

 (Lam.) Fosberg 



Houstonia arenaria Rose, Contr. U.S. Natl. 

 Herb. 1: 70. 1890. Type: MEXICO: Baja 

 California, La Paz, 20 Jan-5 Feb 1890, E. 

 Palmer 28 (Holotype US 47260 (photos 

 MEXU, PTBG); Isotypes F, GH, 



naria (Rose) W. H. 



Le\\i> 



Houstonia asperuloides (Benth.) A. Gray, Proc. 

 Amer. Acad. Arts 5: 158. 1860. Hedyotis 

 asperuloides Benth., Bot. Voy. Sulphur 19,/?/. 

 13. 1844. Type: MEXICO: Baja California, 

 Cabo San Lucas, Barclay s.n. (Holotype BM, 

 n.v.).— Hedyotis asperuloides Benth. 



Houstonia asperuloides (Benth.) A. Gray var. 

 brandegeana (Rose) Wiggins in Shreve & 

 Wiggins, Veg. Fl. Sonoran Desert 2: 1399. 

 1964. Houstonia brandegeanna Rose, Contr. 

 U.S. Natl. Herb. 1: 83. 1890. Type: MEXICO: 

 Baja California, La Paz, 20 Jan-5 Feb 1890, 

 E. Palmer 31 (Holotype US 47259 (photos 

 MEXU, PTBG); Isotypes F, GH, n.v.). 

 — Hedyotis asperuloides Benth. f. 

 brandegeana (Rose) W. H. Lewis 



Houstonia bouvardioides (Seem.) Benth. & 

 Hook, f, Gen. PI. 2: 60. 1873. Hedyotis 

 bouvardioides Seem., Bot. Voy. Herald 2: 

 296. 1856. Type: MEXICO: Without precise 

 locality [Durango ?], Sierra Madre, Seemann 

 s.n. (Holotype BM, n.v.; Isotypes C, n.v., 

 fragment F (photo PTBG), GH, n.v.). 

 — Bouvardia bouvardioides (Seem.) Standi. 



Houstonia brandegeana Rose, Contr. U.S. Natl. 

 Herb. 1: 83. 1890. Type: MEXICO: Baja 

 California, La Paz, 20 Jan-5 Feb 1889, E. 

 Palmer 31 (Holotype US 47259 (photos 

 MEXU, PTBG); Isotypes F, GH, n.v.). 

 —Hedyotis asperuloides Benth. f 

 brandegeana W. H. Lewis 



Houstonia brevipes Rose, Contr. U.S. Natl. 

 Herb. 1: 83. 1890. Type: MEXICO: Baja 

 California, Santa Rosalia, 24 Feb-3 Mar 1889, 

 E. Palmer 202 (Holotype US 47258 (photos 

 MEXU, PTBG); Isotypes F, GH, n.v., US 

 (photos MEXU, PTBG)).— Hedyotis 

 brevipes (Rose) W. H. Lewis 



Houstonia coccinea Andr., Bot. Repos./?/. 106. 

 1800. Type: No herbarium specimens are 

 known to exist, only the drawing/?/. 106. 

 —Bouvardia ternifolia (Cav.) Schltdl. 



Houstonia drymarioides Standi., J. Wash. Acad. 

 Sci. 18: 162. 1928. Type: MEXICO: 

 Tamaulipas, on mountains south of Victoria, 

 1000 m, 9 Apr 1926, R. Runyon 870 



