1918] SARGENT—TILIA 425 - 
for it, as it was by NutraLt, DECANDOLLE, Hooker, DaRrLINGTON, 
and other authors. In his description VENTENAT speaks of the 
leaves as “d’abord légerement pubescent, ensuite parfaitement 
glabre,” which is correct, for although the young leaves are often 
entirely glabrous they are sometimes furnished for a few days 
aiter they unfold with scattered articulate hairs on the upper sur- 
face and on the lower surface with soft pale hairs which are most 
abundant on the midribs and veins.’ 
2. Tilia nuda, n.sp.—Tilia pubescens var. a Aitonii V. Engler, 
Monog. Tilia, 128 (in part). 1909; Tilia americana var. a densiflora 
V. Engler, l.c. 137 (insomuch as relates to Houston, Texas). 1909; 
Tilia americana probably of many authors but not of LInNAEUS.— 
Leaves thin, ovate, abruptly pointed at apex, obliquely truncate 
or unsy trically cordate at base, coarsely serrate with long, 
slender, straight, or slightly curved, conspicuously glandular teeth; 
as they unfold, dark red and sparingly pubescent on the midribs and 
veins, glabrous at the end of a few days, without or very rarely 
with small axillary tufts, dark green on the upper surface, pale 
yellow-green on the lower surface, 10-12 cm. long, 7-9 cm. wide; 
petioles slender, glabrous, 5-6 cm. in length. Flowers 8-10 mm. 
long, on hoary tomentose pedicels, in broad usually 1o- or 12- some- 
times 30- or 40-flowered long-branched glabrous corymbs; peduncle 
glabrous, the free portion 2-3 cm. in length, the bract glabrous, 
oblong, often slightly falcate, cuneate or rounded at base, rounded 
at apex, short-stalked, 1-3 cm. wide; sepals acute, rusty tomentose 
on the outer surface, glabrous on the inner surface; petals oblong- 
Ovate, narrowed at the rounded apex; staminodia oblong-obovate, 
rounded at the broad apex, style glabrous. Fruit subglobose to 
depressed-globose, covered with rusty tomentum, 6-7 mm. in 
diameter. 
* VENTENAT’s paper on Tilia was read in 1799 and published in 1802 in the fourth 
volume of the Mémoires de Acad. Sci. Paris. A separate of this paper with the same 
pagination appeared the same year, but a Spanish translation without the illustrations 
was published in Madrid in May 1800 with the title Monografia del género Tilo in the 
second volume of the Anales de Historia Natural. The correct citation, Paste of 
VENTENAT’s American species is T. glabra Ventenat in An. Hist. Nat. 2:62. 1800; 
T. pubescens Ventenat in An. Hist. Nat. 2:63. 1800; JT. pubescens var. —* 
Ventenat in An. Hist. Nat. 2:64. 1800; T. ccibells Ventenat in An. Hist 
