DESCRIPTIONS OF PLANTS, MOSTLY NEW, FROM MEXICO AND 
THE UNITED STATES, 
By J. N. Roser, 
The descriptions here brought together have been drawn up from 
time to time in connection with miscellaneous determinations. The 
types of all my new species are deposited in the United States National 
Herbarium. The paper also includes descriptions of new species of 
Malvacere by Mr. I. G. Baker of the British Museum, and of Cucurbi- 
tacew by Prof. A. Cogniaux of Verviers, Belgium. 
NEW SPECIES FROM MEXICO, 
Sida cinerea Baker fil., sp.nov. 
Tota cinerea, caule vel ramo ligneo yirgato tereto ereeto, foliis cordato-ovatis 
acuminatis serratis petiolatis utrinque tenuiter stellato-pubescentibus, floribus 
axillaribus et ad apicem aggregatis pedunculis foliis brevioribus, calyce tubo tereto 
vel subtereto laciniis ovatis acuminatis, petalis obovatis (in sicco aureis) calyce 
parce longioribus, carpeliis 7 dorso rotundatis vel parce applanatis brevissime 
bicuspidatis. 
Habitat, Mexico. Tepic. Dr. E. Palmer. No. 1835. Gathered between January 5 
and February 6, 1892. 
Stem or branches virgate, cinereous, terete, woody; leaves membranous, cordate, 
ovate, acuminate, serrate, 1 to 2 inches lone, } to 1% inches broad, petioles } to 14 
inches long; stipules linear lanceolate, rather more than j inch long; flowers axil- 
lary and terminal, generally aggregated, rarely solitary or subsolitary, peduncles 
shorter than the leaves; calyx } inch long, tube terete or subterete, cinereous and 
covered with pilose hairs, sepals ovate, acuminate; petals obovate, slightly longer 
than the calyx; carpels 7, very shortly beaked, rounded or slightly flattened at the 
back, sparsely pubescent, about 1 line long. 
This plant is allied to Sida dumosa Sw. 
Sida lodiegensis [Baker fil., sp. nov. 
Caule erecto ramoso tereto percune minute stellato-pubescente, foliis lanceolatis 
vel lineari-lanceolatis basi cuneatis serratis viridis superne glabris vel glabriuseulis 
subtus minute stellato-pubescentibus breviter petiolatis, stipulis linearibus floribus 
axillaribus solitariis interdum fere racemosis, calyce externe stellato-pubescente 
tubo tereto laciniis ovatis acutis, petalis obovatis calyce longioribus (in sicco roseis) 
columna staminea glabra, carpellis 5. ; 
Habitat, Mexico, Lodiego, Dr. E.Palmer. No.1577. Collected between October 
9 and 15, 1891. 
Stem 1} feet high, possibly more, perennial, terete, copiously branched, covered 
with fine stellate pubescence; leaves | to 2) inches long, } to 4 inch broad, lanceo- 
late or linear-lanceolate, green, membranous or submembranous, 3-nerved at the 
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