Table 4 Herbarium voucher specimens for DNA samples included in the COSII marker screen

Alyxia grandis P.I. Forst.

D. J. Middleton 703 [A]

Australia

Alyxia oblongata Domin.

D. J. Middleton 702 [A]

Australia

Asclepias californica Greene ssp. californica

Lynch 10,779 [LSUS]

USA. California. San Bernardino Co.

Asclepias connivens Baldwin ex Elliott

Lynch 12,350 [LSUS]

USA. Florida

Asclepias coulteri A. Gray

Fishbein 5172 [OKLA]

Mexico. Querértaro. Mpio. Landa

Asclepias cryptoceras S. Watson ssp. davisii

Fishbein 5723 [OKLA]

USA. Oregon. Crook Co.

Asclepias fascicularis Decne.

Fishbein 5886 [OKLA]

USA. California. Siskiyou Co.

Asclepias glaucescens Kunth

Lynch 14,142 [LSUS]

Mexico. Oaxaca

Asclepias oenotheroides Schltdl. & Cham.

Lynch 13,339 [LSUS]

USA. Texas

Asclepias otarioides E. Fourn.

Fishbein 5857 [OKLA]

Mexico. Distrito Federal. Del. Tlalpan

Asclepias pringlei (Greenm.) Woodson

Fishbein 5845 [OKLA]

Mexico. Zacatecas. Mpio. Tlaltenango

Asclepias pringlei

Ventura 2807 [ARIZ]

Mexico. Distrito Federal. Del. Milpa Alta

Asclepias aff. pringlei

Fishbein 5119 [OKLA]

Mexico. Michoacán. Mpio. Coalcomán

Asclepias aff. pringlei

Fishbein 5175 [OKLA]

Mexico. Querétaro. Mpio. Pinal de Amoles

Asclepias sanjuanensis K.D. Heil, J.M. Porter & S.L. Welsh

Ellison s.n. [OKLA]

USA. New Mexico. San Juan Co.

Asclepias stenophylla A. Gray

Fishbein 5394 [OKLA]

USA. Colorado. Boulder Co.

Asclepias subulata Decne.

Fishbein 3147 [WS]

Baja California Sur. Mpio. Comondú

Asclepias viridis Walter

Lynch 13,072 [LSUS]

USA. Texas

Baissea multiflora A. DC.

F. Billiet S3853 [BR]

Cultivated. Belgium. Nat. Bot. Gard. Belgium

Calotropis procera (Aiton) W.T. Aiton

Fishbein 5472 [OKLA]

Cultivated

Epigynum auritum (C.K. Schneid.) Tsiang & P.T. Li

D. J. Middleton et al. 1457 [A]

Thailand

Epigynum cochinchinensis (Pierre) D.J. Middleton

D. J. Middleton 209 [A]

Thailand

Gomphocarpus cancellatus (Burm. f.) Bruyns

Drewe 534 [K]

South Africa

Marsdenia glabra Constantin

D. J. Middleton et al. 1123 [A]

Thailand

Oncinotis glabrata Stapf ex Hiern

C. C. H. Jongkind et al. 1315 [US]

Ghana

Oncinotis tenuiloba Stapf

T. Abbott 7707 [Z]

South Africa

Pergularia daemia (Forssk.) Chiov.

Fishbein 5445 [OKLA]

Namibia

Telosma cordata (Burm. f.) Merr.

T. Livshultz 01-33 [BH]

Cultivated. USA. Cornell University