Refugium Botanicum. | [September, 1869. 
TAB. 158. 
Natural Order ScROPHULARIACEX. 
Tribe HEMIMERIDE. 
Genus Atronsoa (Ruiz et Pavon, Fl. Per. p.151). Calyx quinquepar- 
titus. Corolla torsione pedicelli resupinata, explanato-rotata, 5- 
loba, laciniis latis obtusissimis, 2 posticis (resupinatione inferioribus) 
brevissimis profunde solutis, anticaé maxima, fauce vix concava, 
rarius obscure bifossulata. Stamina 4. Filamenta brevia; anther 
oblong, loculis dorso oppositis vel divergentibus apice confluen- 
tibus. Stylus apice capitato-stigmatosus. Capsula ovata vel ob- 
longa, septicido-bivalvis, valvulis integris bifidisve. Semina punc- 
tato-rugosa.— Benth. in D.C. Prodr. vol. x. p. 249. 
A. Marruewsit (Benth. in D.C. Prodr. x. p. 250). Foliis sessilibus vel 
subsessilibus parvis lanceolatis dentatis basi cuneatis, racemis 
strictis 6—12-floris, corolla labio postico calyce subeequante, antico 
duplo longiore, antheris ovatis filamentis duplo longioribus, sepalis 
lanceolatis ascendentibus capsula duplo brevioribus. 
A native of Peru. 
Stems twelve to eighteen inches high, erect, with a few 
ascending branches, straight, square, and like the rest of the 
plant quite glabrous. Leaves in opposite pairs, sessile or the 
lowest slightly stalked, lanceolate, an inch or more long, two to 
three lines broad, acute, toothed, cuneate at the base, the texture 
firm, and both sides dark green and quite glabrous. Flowers in 
lax elongated terminal racemes of six to twelve flowers each, 
the pedicels erecto-patent, the lower bracts six to nine lines long, 
like the leaves in shape and texture but much smaller. Calyx 
naked, two lines deep, of five equal lanceolate divisions. Corolla 
scarlet, deeply five-cleft, the lobes all bluntly rounded, the upper 
one the largest, and lowest pair considerably smaller than the 
middle pair. Stamens four, equal, with erect ovate anthers and 
short thick flaments. Style filiform, with a capitate stigma. Cap- 
sule ovoid, naked, twice as long as the calyx. 
Tab. 158.— 1, corolla; 2, flower with corolla taken away: both mag- 
nified.—J. G. B. 

This is a very beautiful species of Alonsoa, producing its 
brilliant flowers in abundance, and is well worthy of cultivation, 
It will thrive in any good garden-soil, if planted out in the open 
air during the summer. A cool greenhouse suits it well for 
winter treatment. It was raised from seed sent from Peru by 
Mr. Farris.—W. W. S. 
