be said to be white; its sepals are said to be subequal and 
subulate with awn-like points, so that the plant, whatever it 
may be, is not 2. Harveyana. According to Loudon, a plant 
introduced by the Marquis of Bute in 1796 was accepted as 
Cavanilles’ plant, and early in the nineteenth century was in 
cultivation at Kew, Parisand Berlin under Cavanilles’ name. 
Its identity is vouched for by a specimen, collected by Gay 
in the Jardin des Plantes in 1817, now in the herbarium at 
Kew. This plant was accepted by Nees as R. lactea, Cav., 
and described by him as Cryphiacanthus lacteus. It agrees 
fairly well with wild specimens collected by Andrieux 
between Acatlan and Chila in lower western Puebla. No 
specimens of Cavanilles’ original plant appear to exist, and 
it is impossible to say whether the differences between 2. 
lactea, Cav., and the plant of Nees be due to faulty delinea- 
tion or to natural variation. The point that is of consequence 
is that if the characters given by Cavanilles exclude R. Har- 
veyana from R. lactea, those of the specimens accepted as £2. 
lactea make the recognition of our plant equally necessary. 
Drscriprion.—Herb, perennial; stems rather slender, 
trailing or ascending, densely hairy near the top, almost 
glabrous lower down, upper internodes 4-angled above, the 
lower cylindric. Leaves petioled, oblong or elliptic-oblong, 
acute, base narrow-cuneate, 2-3 in. long, 1-1} in. wide, 
membranous, softly pubescent, especially above, with longish 
glistening hairs ; petioles slender, 1—2 in. long, hairy. Flowers 
produced one at a time in the upper axils, sessile, Sepals very 
unequal, 4 linear-subulate, 2 in. long, the fifth wide-lanceolate, 
leafy, } in. long; all hirsute or nearly glabrous but with 
ciliate edges. Corolla pale lilac with white throat and tube; 
cylindric base of tube 2 in. long, as long as the widened 
upper part; lobes elliptic-rounded, subequal, 2—2 in. long. 
Anthers sagittate, with locules acute below, 1 lin. long. 
Ovary glabrous; style 1} in. long, pilose with spreading: 
hairs; lower stigmatic lobe 1 lin. long. Capsule not 
stipitate, oblong-lanceolate, subacute, } in. long, 4-seeded. 
Seeds sublenticular, +. in. across, clothed with hairs that 
spread elastically when wet. 
Fig. 1, calyx and pistil; 2, part of corolla-tube, sh wing staminal insertion, 
laid open; 3 and 4, anthers; 5, ovary :—«il enlaryed. 
