92 JOURNAL OF THE ARNOLD ARBORETUM [voL. xix 
TILIACEAE 
Tilia mesembrinos sp. nov. few LA 19 5:03 
Arbor, ramis ramulisque teretibus, glaberrimis, ultimis circiter 2 mm. 
diametro; foliis oblique inaequilateraliterque ovatis, circiter 10 cm. 
longis et 6 cm. latis, supra subolivaceis, glabris vel in nervis basalibus 
breviter decidue stellato-pubescentibus, subtus densissime stellato- 
pubescentibus pilis albidis vel in nervis pallide brunneis, apice acutis, 
_ basi latissime inaequilateraliter acutis vel oblique truncatis, haud corda- 
tis, recto- vel curvato-dentatis dentibus 0.5-1 mm. longis 2-5 mm. 
remotis, subpatulis, versus basim integris; nervis primariis utrinque 
circiter 7, rectis, adscendentibus, subtus manifestis; petiolo 3—-3.5 cm. 
longo, glabro vel sursum stellato-pubescente; cymis ut videtur 3-floris, 
sub fructu cum bracteis circiter 14 cm. longis, pedunculis glabris, circiter 
3.5 cm. longis, pedicellis breviter stellato-pubescentibus; bracteis sessili- 
bus vel brevissime (1-2 mm.) crasse stipitatis, oblanceolatis, obtusis vel 
rotundatis, 10-14 cm. longis, sursum circiter 2 cm. latis, deorsum plus 
minusve angustatis, basi 6-8 mm. latis, obtusis, in sicco pallidis, utrinque 
breviter stellato-pubescentibus; fructibus ovoideis vel subellipsoideis, 
circiter 1 cm. longis, breviter apiculatis, subverruculosis et dense breviter 
pallide pubescentibus. 
Inpo-CHINA, Tonkin, Massif du Song Ta Van, Chapa, A. Petelot 
5808, August, 1936. 
This is the first representative of the genus to be recorded from Indo- 
China, the specific name being selected in reference to its rather unusual 
southern range as compared to most other species of the genus. It is 
well characterized by its entire leaf-bases being very broadly acute to 
obliquely truncate, not at all cordate, and by the very dense whitish 
indumentum covering the entire lower surface. In some respects it sug- 
gests Tilia mofungensis Chun & Wang of Kwangtung Province, China, 
but that species has somewhat cordate leaf-bases and a very different 
indumentum. 
