Order I. 
POLYGAMIA MONGECIA. 
855 
MONCECIA, 
14086 Spines stipulary very short straight. Leaves of two pairs halved oblong obt. Panicle simple long terminal 
14087 Spines stipulary straight, Leaves of two pairs roundish elliptical halved eraarginate. Raceme terminal 
14088 Unarmed, Leaves bipinnate. Spike double of two globes pendulous 
14089 Unarm. I>vs. bipin. of Spairs, Leafl. ov. ac. smooth shining above, Glands betw. every pair, Petiole winged 
14090 Unarm. Lvs. pinn of about 5 pairs, Leafl. ov. obi. acum. smooth, Gland between every pair, Petiole winged 
14(<91 Leafl. of 5 pairs obi. acumin. hairy above and shining villous bene;ith. Branches covered with rusty down 
14092 Unarmed, Lvs. of 3 pairs, Leaflets obi. acuminate equal smootli. Gland between each pair, Petiole winged 
14093 Unarm. Lvs. pinn. of 2 pairs, Leafl. obi. lane. acum. smooth. Gland between each pair, Petiole wing, at end 
140514 Spines stipulary recurved, I>eaves of 2 pairs. Leaflets halved obovate. Pod ensiform straight 
140P5 Unarm. Lvs. pinn. of 2 pairs, Leafl. obov. obi. unequal sided smooth, A gland between the lowest small ones 
14(y96 Unarmed, Lvs. conjugate pinnate. Leaflets ov. obi. term. opp. lateral alternate. Flowers in lateral umbels 
14097 Unarmed, Lvs conjugate pinnate, Leafl. obi. blunt uneq. at base. Petioles without glands. Heads stalked 
14098 Spines stipular, Lvs. conjugate pinnate, Pinnas of 3 pairs. Leaflets ovate acute smooth. Pods spirally twisted 
14099 Unarmed herbaceous. Leaves conjugate pmnate, Pinnae 4pairs, Leaflets roundish. Pods with one joint 
14100 Prickles of branches and stems scattered hooked, Lvs. bipinn. ciliat. and rough, Sutures of pods very spiny 
14101 Stem and petioles prickly. Leaflets nearly halved ovate acute hairy beneath smooth above 
14102 Spines of petiol. scatter, very broad compr. straight, Lvs. bipinn. finally smooth without glands, Leafl. 10-15 
14103 Stem and petioles prickly, Leaflets halved cordate ovate blunt smooth 
14104 Stem prickly more or less hispid, Leaves digitate-pinnate. Pinna; 4 of many pairs. Leaflets linear 
14105 Stem aculeate smooth hairy upwards. Leaves digitate-pinnate. Pinnae 8 of many pairs. Leaflets linear 
14106 Like M. asperata, but less hairy 
14107 Prickles of branches and stems scattered hooked. Leaves bipinnate. Pinnae of 5 pairs. Leaflets 20-25 lin. 
14108 Leaves bipinnate, Pinna; of 8-12 pairs, Leaflets of many pairs bristly ben. Peduncles twin as long as head 
14109 Prickly, Leaves bipinnate : partial of 6 pairs ; proper of many pairs cultrate. Gland of petiole depressed 
14110 Lvs. bipinnate terminated by a tendril, Pinnee of 2-3 pairs. Leaflets ovalemarg. Spikes numerous fascicled 
14111 Prickly, Leaves bipinnate : partial of 3 pairs ; proper of many pairs. Pods acute, Stem 4-cornered 
14112 Prickly, Leaves bipinnate : partial of 6 pairs ; proper of many pairs, Pods acute. Stem 5-cornered 
and Miscellaneous Tarticulars. 
scattered elements of their nervous system. This hypothesis receives additional strength from the great 
similarity which exists between the medullary substance of the brain of Mollusca Gasteropoda and the cellular 
medullary tissue of plants. In pursuit of this idea, Dr. Dutrochet made a variety of experiments upon the 
sensitive plant, the results of which seem to be these. — The principal point of locomotion, or oi7nubility, exists 
in the little sivelling which is situated at the base of the common and partial petioles of the leaves ; this 
swelling is composed of a very delicate cellular tissue, in which is found an immense number of nervous 
corpuscles ; the axis of the swelling is formed of a little fascicle of tubular vessels. It was ascertained by 
some delicate experiments, that the power of movement, or of contraction and expansion, exists in the 
parenchyma and cellular tissue of the swelling, and that the central fibres have no specific action connected 
with the motion. It also appeared that the energy of the nervous powers of the leaf depended wholly upon 
an abundance of sap, and that a diminution of that fluid occasioned an extreme diminution of the sensibility 
of the leaves. Prosecuting his remarks yet further, the author ascertained, that in the motion of the sensitive 
plant, two distinct actions take place, the one of locomotion, which is the consequence of direct violence 
offered to the leaves, and which occurs in the swellings already spoken of ; the other of nervimotion, which 
depends upon some stimulus applied to the surface of the leaflets, unaccompanied by actual violence, such as 
the solar rays concentrated in the focus of a lens. As in all cases, the bending or folding of the leaves evidently 
takes place from one leaf to another with perfect continuity ; it may safely be inferred, that the invisible 
nervous action takes place in a direct line from the point of original irritation, and that the cause by which 
this action of nervimotion is produced, must be some internal uninterrupted agency. This was, after much 
curious investigation, determined by the author to exist neither in the pith, nor in the bark, nor even in the 
cellular tissue filled with nervous corpuscles, and on which, he supposes, the locomotion of the swelling at the 
base of petioles to depend. It is in the ligneous part of the central system, in certain tubes supplied with nervous 
corpuscles, and serving for the transmission of the sap, that Dr. Dutrochet believes he has found the true seat 
of nervimotion, which he attributes to the agency of the sap alone, while he considers the power of locomotion 
to depend upon the nervous corpuscles alone. 
Some of the species ripen seed ; others may be increased by cuttings from the points of the young shoots 
planted in sand and kept closely covered. 
The pods of M. fagifolia contain a sweet whitish pulp, which the natives of Martinique suck; they call the 
tree and its fruit Fois Doux, or sweet pea. 
2125. Schrankia. Named by Willdenow, in honor of his countryman, Francis do Paula Schrank, a well 
known German botanist. Herbaceous prickly shabby-looking plants, with the habit of Mimosa 
3 14 
