346 
According to Brandegee the plant is so glutinous that the 
“stems stick together when collected. He describes it as differing 
‘from’ most species of Rhynchosia in having branched racemes and 
in the attachment of the funicle at one end of a linear hilum. - 
‘Eriosema diffusum (H.B.K.) G. Don; CNH. xxiii. 495.—Gillycine 
diffusa H.B.K. Nov. Gen. et Sp. vi. 420, t. 572. 
_ Sinaloa (fide Standley). 
Vernacular name ‘‘ Hierba del duende.” 
‘E. grandiflorum (Cham. et Schlecht.) Seem.;. SBH. 345; CNH. 
‘xxiii. 495—Rhynchosia grandiflora Cham. et Schlecht. 
Cerro de Pinal, fl. Dec. 1848, Seemann 1531. San Ignacio; 
Mesa de la Higuera, 760 m., Gonzalez 602. 
Vernacular names “ Jarilla Serrana ”’, “‘ Jarilla de la Sierra.” 
Lonchocarpus lanceolatus Benth; CNH. xx. 73, text fig. 23, t. 5, 
fig. C; CNH. xxiii. 513. 
Ymala, Palmer 1433; between Rosario and Acaponeta, Rose 
1873. 
Vernacular name “ Cabo de hacha.” 
L. megalanthus Pittier in CNH. xx. 70, fig. 19 (1917); CNH. 
xxiii. 513. Sinaloa (fide Standley). 
L. sericeus (Poir) H.B.K.; CNH. xx. 82, fig. 33; CNH. xxiii. 
“514 
Between Rosario and Concepcién, Rose 3268. 
Piscidia mollis Rose in CNH. i. 98 (1891).—Icthyomethia mollis 
Blake in Journ. Wash. Acad. Sc. ix. 246 (1919); CNH. xxiii. 511. 
Sinaloa (fide Standley). 
Vernacular name ‘“ Palo blanco.” 
XXXIV.—THE BACTERIAL NODULES OF THE 
RUBIACEAE. 
L. A. Boopte. 
Trimen, in his Handbook of the Flora of Ceylon (1894, part 2, 
p. 349 et seq.), describes the leaves of Pavetta indica L. as having 
beneath.”’: He also mentions warts on the leaves of Pavetta 
angustifolia Thw., P. involucrata Thw. and P. Gleniei Thw. . 
Similar warts or nodule-like thickenings occur on the leaves 
of some other members of the Rubiaceae, and it has been known 
for many years that these leaf-nodules contain Bacteria, Zimmer- 
mann having established this fact in 1902 (Jahrb. f. wiss. Bot., vol. 
37, p. 1) with regard to Pavetta indica, P. angustifolia and two 
other species. 
At a later date a further study of the nodules and of the 
Bacteria inhabiting them was. made by von Faber (Jahrb. f. 
wiss. Bot., vol. 51, 1912, p. 285, and ibid., vol. 54, 1914, p. 243), 
