We have also from Dr. Gillies, from Mendoza, a species 
of Aceena, belonging to the same set as the foregoing, but 
characterised by its finely cut leaves, and more numerous 
leaflets: this may be recorded thus : — 
A. myriophylla; erecta pubescens, foliis 7-9-jugis, foliolis linearibus altè 
pinnatifidis ; laciniis angustissimis subtùs sericeis, spicà cylindraceà 
basi interruptá, fructibus ovalibus tomentosis glochidatis. 
The following is the description of the Aceena pinna- 
tifida as it appears in our Gardens : — 
An herbaceous plant, becoming slightly pubescent at 
the base. Stem ascending, leafy, covered all over with 
silky hairs, as are all the other parts. Leaves in 4-5 pairs; 
leaflets usually 4-parted, sometimes 3-parted, occasionally 
5-parted, but this is not common; the lower leaflets 
smaller, alternate, and sometimes entire. Flowers herma- 
phrodite, in interrupted spikes. Spike formed of several 
heads, clustered at the top, becoming remote towards the 
base, and finally changing to one or two axillary flowers. 
Caly. inferior, having at its base several imbricated, hairy, 
scarious bractee; the tube 4-cornered, verrucose, thick- 
ened, becoming indurated in the fruit ; the limb spreading, 
5-parted, the divisions green, polished inside, hairy without. 
Petals none. Stamens 5-10, uncertain in number, inserted 
into the contracted tube of the calyx; filaments filiform, 
decumbent; anthers large, dark purple, nearly square, 
2-celled, dehiscing lengthwise. Ovarium solitary, included 
within the tube of the calyx, with a solitary pendulous 
ovulum. Style continuous with the ovarium ; stigma large, 
formed of a bundle of long fringes. 
This genus offers an illustration of what is called the 
certainty and precision (!!) of the Linnzan system of Botany, 
which is highly amusing. Perhaps some of our friends at 
Liverpool, the last stronghold of the remnant of the followers 
of the great Swedish Naturalist, will inform us to what 
Linnean class Acena should be referred. ne 
