PIPER—BERBERIS AQUIFOLIUM AND BERBERIS REPENS. 451 
EXPLANATION OF PLATE 24.—Photograph (reduced) of the type specimen of 
Berberis aquifolium Pursh, now in the herbarium of the Philadelphia Academy 
of Natural Sciences. From the labels it is clear that Pursh originally intended 
to publish the plant as a new genus. The principal label in Pursh’s handwrit- 
ing reads as follows: “—————— ilicifolia, Nov. genus. Mountain Holly. The 
flowering stem springs up from near the ground and is upright; the infertile 
shoots trail along the ground. Rich soil among rocks. Great rapids of Colum- 
bia. April 11, 1806. Capt. Lewis.” 
The unpublished genus name of Pursh is omitted and it has also been ol. 
literated from the plate, to avoid bringing additional synonymy into the litera- 
ture of the subject. 
EXPLANATION OF PLATE 25.—A portion of the type specimen of Berberis aqui- 
folium Pursh, shown in Plate 24. Natural size. 
EXPLANATION OF PLATE 26.—Photograph of Pursh’s colored plate of Berberis 
aquifolium. It is clearly evident that the flowering shoot was drawn from the 
Lewis specimen. The separate leaflet probably depicts the missing leaflet of 
the lower leaf of the Lewis specimen. The three-lobed stigma on the fruit is 
erroneous. 
