for Allen, ''Cytological studies of infection of Baartt, Kanred, and Mindum wheats by Puccinia graminis tritici forms III and XIX.'' J. Agric. Res. 26(12): 1923 [22 Dec.]. Pl. 1 (following p. 604).
for Allen, ''Cytological studies of infection of Baartt, Kanred, and Mindum wheats by Puccinia graminis tritici forms III and XIX.'' J. Agric. Res. 26(12).
: 1923 [22 Dec.]. Pl. 3 (following p. 604).
for Allen, ''Cytological studies of infection of Baartt, Kanred, and Mindum wheats by Puccinia graminis tritici forms III and XIX.'' J. Agric. Res. 26(12): 1923 [22 Dec.]. Pl. 4 (following p. 604).
for Allen, ''Cytological studies of infection of Baartt, Kanred, and Mindum wheats by Puccinia graminis tritici forms III and XIX.'' J. Agric. Res. 26(12): 1923 [22 Dec.]. Pl. 5 (following p. 604).
for Allen, ''A cytological study of Orange leaf rust, Puccinia triticina physiologic form 11, on Malakoff wheat.'' J. Agric. Res. 34(8): 1927 [15 Apr.]. Pl. 3 (following p. 702).
for Allen, ''A cytological study of Puccinia triticina physiologic form II on Little club wheat.'' J. Agric. Res. 33(3).\: 1926 [1 Aug.]. Pl. 1 (following p. 202).
Lawrence, George H.M. 1964. Catalogue of an Exhibition of Contemporary Botanical Art at the Hunt Botanical Library. Pittsburgh, Hunt Botanical Library, p. 13
Rhododendron apodectum Balf. f. et W. W. Sm., Ericaceae
Rhododendron bullatum Franch., Ericaceae
Rhododendron megacalyx Balf. f. et Ward, Ericaceae
Rhododendron oreodoxa forma haematocheilum Franch., Ericaceae
Rhododendron arizelum Balf. f. et Forrest, Ericaceae
Rhododendron fortunei Lindl., Ericaceae
Rhododendron makinoi Tagg, Ericaceae
Rhododendron scintillans Falf. f. et W. W. Sm., Ericaceae
Rhododendron brachycarpum D. Don ex G. Don, Ericaceae
Rhododendron ferrugineum L., Ericaceae
Rhododendron hirsutum L., Ericaceae
Rhododendron yunnanense Franch., Ericaceae
''Rhododendron russatum Balf. f. et Forrest, R. sperabiloides Tagg et Forrest, R. callimorphum Balf. f. et W. W. Sm., R. keleticum Balf. f. et Forrest''
Rhododendron callimorphum Balf. f. et W. W. Sm., Ericaceae
Rhododendron keleticum Balf. f. et Forrest, Ericaceae
Rhododendron russatum Balf. f. et Forrest, Ericaceae
Rhododendron sperabiloides Tagg et Forrest, Ericaceae