There were 4 illustrations found for G.B. Threlkeld
6 1191088 Neololeba atra (Lindl.) Widjaja [125 126118 Bambusa atra Lindl.]Ann. Missouri Bot. Gard., vol. 68 : p. 38, fig. 7 (1981) [G.B. Threlkeld]
2 117308 Atractantha falcata McClureAnn. Missouri Bot. Gard., vol. 79 : p. 176, fig. 11 (1992) [G.B. Threlkeld]
2 117309 Atractantha radiata McClureAnn. Missouri Bot. Gard., vol. 79 : p. 179, fig. 14 (1992) [G.B. Threlkeld]
2 117309 Atractantha radiata McClureAnn. Missouri Bot. Gard., vol. 79 : p. 180, fig. 15 (1992) [G.B. Threlkeld]