60 BERBERIDACEAE. 2 
>) MAHOBERBERIS. Hybrid Barberry. 
(Family Berberidaceae). 
Rather low  and_— sparingly 
branched shrubs: subevergreen. 
Twigs roundish, relatively stout: 
pith relatively large, pale, contin- 
uous. Buds alternate, moderate, 
solitary, sessile, with half-a-dozen 
or so loose gray scales, usually 
developing into short spurs cov- 
ered by the long-persistent ba- 
sally dilated petioles. Leaf-scars 
terminating the persistent peti- 
oles, half-round, sometimes paired, 
with indistinct bundle-traces. 
Leaves papery, pungently serrate, 
mostly of 1 leaflet: stipules and 
stipule-scars lacking. 
This hybrid between a true 
barberry (Berberis vulgaris) and 
a Mahonia (M. Aquifolium) indi- 
cates clearly the close relation- 
ship between the two groups, 
which on technical characters are combined in the genus 
Berberis by many conservative botanists. Such botanists 
write its name  Berberis Neuberti. When species belonging 
to different genera hybridize, as here, it will be found that 
the genera commonly differ by relatively small or instable 
technical characters. If, however, they are maintained as dis- 
tinct, their hybrid progeny pertains to neither in fact. For 
this reason, as in the present case, a bigeneric hybrid is given 
a generic name different from that of either parent, by those 
who believe in the generic separability of the parents. 
Glabrous: leaves exceeding the petioles. x M. Neuberti. 
