lobes is surprisingly constant in density; the interior of 
the lobes is almost always perfectly glabrous; the ovary 
is completely glabrous, sometimes very slightly punc- 
tate; the style is very much abbreviated and thickened ; 
the stigma lobes are unusually large and carnose, cover- 
ing the short style; the annular disk is consistently very 
large and conspicuous, very irregularly deep-laciniate, 
the tongue-shaped segments often up to 1 or 1.2 mm. in 
length—probably the largest of any species of Hevea. 
All but three of the pistillate flowers which I examined 
were completely glabrous within. In the three excep- 
tions, | found an extremely sparse tomentulose indu- 
mentum on the upper half of the inner surface of the 
‘alyx, especially near the apex of the lobes. Seibert 
(in Ann. Mo. Bot. Gard. 34 (1947) 841, pl. 88), has illus- 
trated the pistillate calyx as very remotely tomentulose 
on the upper half of its interior surface. Hemsley (loc. 
cit. fig. 12) published a drawing of an open pistillate 
calyx of Hevea rigidifolia showing a tomentulose con- 
dition on the entire inner surface of the lobes, but this 
was an error. [| have examined the original sketch which 
is attached to the type sheet at Kew and have found that 
the interior surface of the pistillate calyx is drawn as 
tomentulose only near the apex of the lobes. The dis- 
sected flower on which this sketch was based agrees with 
the original drawing. It should be noted that the origi- 
nal sketch of Hevea rigidijfolia was redrawn and, unfor- 
tunately, altered in preparing the plates for publication. 
Mueller-Argoviensis (in Martius F]. Brasil. 11, pt. 2 
(1874) 800) stated that the calyces of both staminate and 
pistillate flowers are ‘‘intus inferne praesertim vellereo- 
tomentelli.’’’ Pax (in Engler Pflanzenr. 4, 147 (Heft 42) 
°In an earlier description of Hevea rigidifolia, Mueller-Argoviensis 
(in DC. Prodr. 15, pt. 2 (1866) 718) indicated that the pistillate 
calyx was “‘intus circa fundum minute subulato-glanduligeri.’’ (See 
footnote 3.) 
[114 ] 
