316 
Corolla as in preceding, but tubular portion longer; anthers oblong; calyx larger, 
fully 24 the length of the corolla, in fruit 12-15 mm. in diameter. 
3. M. purpurascens, 
Corolla campanulate-urceulate, little if at all constricted at the orifice. 
4. M. Lemmoni. 
1. Margaranthus tenuis Miers, Ill. S. A. Pl.2: 74. pl. 57. 1849-57; 
Dunal, in DU; Prod. 13: part 1, 685. 
Stem very slender, sharply angled, divaricately branched, 
glabrous or the upper parts slightly strigose with short hairs; 
leaves lanceolate, membranaceous, long-acuminate, subentire or 
sometimes few-toothed, tapering into a slender petiole; the short 
peduncles and calyx strigose; the latter campanulate, less than half 
the length of the corolla, its lobes short, broadly triangular; corolla 
urceolate, obtusely 5-angled, considerably saccate, much con- 
stricted at the orifice so that the orifice is narrower than the short 
cylindrical tube below, yellowish, with the sacs and the teeth 
tinged with purple; teeth lanceolate, divergent, the sinuses be- 
tween them narrow ; anthers long, half as long as the corolla, ta- 
pering upward; fruiting calyx round-ovoid, about 10 mm. g 
eter. 
Gray includes M. tenuis in M. solanaceus, but a comparison be- 
tween Miers' figures of the first and Schlechtendal's plate of the 
second, is only needed to show that the structure of the flower is 
very different. The herbarium specimens show the same 
characters. 
The specimens of M. tenuis from the original collection, the 
only ones I have seen, are much more slender than any of M. 
solanaceus and have much narrower leaves. 
Mexico: Coulter, no. 1220. (Type). 
N 
. Margaranthus solanaceus Schlecht. Ind. Sem. Hort. Hal. 
1838; Linnaea, 13: litt. 99. (1839); Dunal, in DC. Prod. 13: part 
1, 453; Gray, Syn. Fl. 2: part 1, 237; Hemsley, Biol. Cent. 
Am. 2: 24; Torr. Bot. Mex. Bound. 154; Coult. Cont. U. S. 
Nat. Herb. 2: 301. 
Stem slender, more obtusely angled, divaricate, slightly stri- 
gose or glabrous; leaves membranaceous, ovate or ovate-lanceo- 
late, subentire or repandly few-toothed; peduncels short, strigose ; 
calyx campanulate, about half the length of the corolla, its lobes 
broadly triangular; corolla yellowish, tinged with purple, upper 
portion nearly spherical, slightly saccate, less constricted at the 
orifice; teeth very small, sinuses between them very broad and 
