316 PHANEROGAM I A. 



all alike and fertile. Sepals oblong or oblong-lanceolate, abruptly 

 awn-pointed, half an inch long. " Petals red" obovate-spatulate, 8 or 

 9 lines long, equal and similar in shape, but, according to Dr. Picker- 

 ing, the three upper are more upright and cucullate, the lower more 

 spreading. Hypogynous glands inconspicuous. Filaments 10, similar, 

 and all antheriferous, capillary, persistent, longer than the sepals after 

 anthesis, sparsely hairy, more densely so at their dilated base. Ovary 

 villous. Styles hairy as far as they are united with the slender beak 

 (7 or 8 lines long in fruit), then glabrous and prolonged for half an 

 inch as a filiform compound style, their separate and stigmatose apices 

 short. Carpels hairy in fruit. Seed glabrous, minutely reticulated 

 under a lens. 



To this most remarkable species belongs a portion of a stem in the 

 museum of the Exploring Expedition, marked by Mr. Brackenridge, 

 " Stem of a Pelargonium, from the mountains of Maui." This stem 

 is three inches in diameter, with a smooth and thin bark : the wood 

 is pretty hard, compact, and close-grained : it exhibits about fourteen 

 indistinct concentric layers, surrounding a small pith, and traversed 

 by rather conspicuous medullary rays. Its intimate structure does 

 not present any marked peculiarity. 



The plant would be a curious and striking one in cultivation. The 

 flowers are said by the collectors, Dr. Pickering and Mr. Brackenridge, 

 to be quite showy ; — more so, doubtless, than they would appear to 

 be from our figure ; the scanty flowering specimens in the collection 

 not being in a very good state. Nor does the plate distinctly represent 

 the irregularity of the corolla ; this peculiarity (which is not shared 

 by the other species of the group) having been made known to us by 

 Dr. Pickering, only since this sheet was in type. Notwithstanding 

 their unequal direction, the petals appear to be all alike in shape and 

 size : nor does the species partake of any other characters of Pelargo- 

 nium, except, perhaps, in the general habit and foliage. 



Plate 31. — Geranium arboreum : branchlets, of the natural size, 

 in flower and fruit. Fig. 1. A sepal; inside view. 2. A petal. 3. 

 Flower, vertically divided through the ovary. 4. Stamens, seen an- 

 teriorly and posteriorly. 5. Pistil, in fruit, with the persistent sta- 

 mens and calyx. 6. A seed. 7. Transverse section of the same. 

 — The details variously magnified. 



