ORDER 30. GERANIACEJS. 67 



Herbs. Disk annular, 10-lobtd. Fruit of 512 indehiscent carpels TRIBOUJU. 1 



Trees. Disk inconspicuous. Fruit of 2 5 dehiscent, 1-seeded carpels GUIACCM. 2 



1. TRIBULUS, L. Sep. and pet. 5, imbricated. Stain. 10, the 5 al- 

 ternate with the petals placed inside of hypogynous glands. Ov. sessile, 

 cells 1-5-seedecl, separating into nutlets. Loosely branched, prostrate 

 herbs, with abruptly pinnate leaves. Flowers solitary (yellow). 



1 T. (Kallstroemia) maxim us L. Lfts. 3 or 4 pairs, oblong or oval, oblique, the ter- 



minal pair largest ; nutlets 10, tubercled, 1-seeded. Ga. Fla. 1 2f. 



2 T. cistoides L. Lfts. 5 8 pairs, linear-lanceolate, subequal; ped. elongated, with 



one large flower ; nutlets 5, spiny, 2-5-seeded. Fla. 2f. 



2. GUAIACUM, Plm. LIGNUM-VIT^E. Sep. and pet. 4 or 5, decidu- 

 ous, imbricated. Stain. 8 10. Ovary stipitate, 2-5-celled, cells many-ovuled, 

 in fruit 1-seeded. ^ t> Wood hard and resinous. Lvs. abruptly pinnate. 

 Ped. in pairs, between the stipules, 1-flowered. 



ft-, sanctum L. Branches jointed ; Ifts. 3 or 4 pairs, oblong, oblique, entire, mucro 

 nate ; ped. short ; pet. obtuse, blue. S. Fla. 20f. Bark white. 



ORDER XXX. GERANIACE^E. GERANIA. 



Herbs or shrubs with perfect, hypogynous, symmetrical and regular, or 

 irregular, 3-5-merous flowers. Stamens as many or twice as many as the 

 sepals, often some of them abortive or rudimentary. Carpels as many as 

 the sepals, 1-few-seeded, mostly separating from the persistent axis at ma- 

 turity. A large and rather incongruous order, as now constituted (by Beii- 

 tham and Hooker), including the following tribes, heretofore regarded as 

 orders. Figs. 27, 28, 172, 243, 26o, 270, 315, 350, 497. 



| Flowers regular. a Styles 5. Carpels several-seeded. TRIBE I. 



Style 1. b Sepals valvate. Fruit beakless. TKIBK II. 



b Sepals imbricate. Fruit beaked. TRIBE III. 

 5 Flowers irregular. c Petals perigynous. Stamens 7 or 8. TRIBE IV. 



e Petals hypogynous. Stamens 5. short. TRIBE V. 



I. OXALIDE.E. Symmetrical. Stamens 10 +. Petals convolute. Pod 5-celled OXALIS. ] 



II. LIMNANTHEjE. Symmetrical. Stamens (10 in LIMSANTHKS, No. 3) 6 in FLOERSBA. S 



III. GERANIE^E. Stamens 10 + . 5 often sterile. Glands between the petals. Fruit a regma. .(e) 



e Stamens 10. all antheriferous. Tail of carpels beardless GKRAmnM. 3 



e Stamens 5 antheriferous. Tail of the carpels bearded ERODICM. 4 



IV. PELARGONIE,. Sepals spurred behind. Glands 0. Stamens declined. .(/) 



/ Spur adnate to the pedicel. Fruit rostrate, a regina PELARGONIUM, ft 



/ Spur free. Fruit not beaked. Carpels 1-seeded, separating TROP^OLUM. 6 



V. BALS AMINES. Sepals spurred behind. Pod owning elastically IMPATIKNS. 7 



1. OXALIS, L. WOOD SORREL. ('O|w?, acid: the herbage is sour.) 

 Sep. 5, distinct or united at base. Pet. contorted, much longer than the 

 ralyx. Sty. 5, capitate. Caps, oblong or subglobous. Carp. 5, 1 to seve- 

 lal-seeded. Mostly y, with palmately trifoliate leaves and inversely 

 Ireart-shaped leaflets. Figs. 265, 270, 497. (See Addenda.) 

 1 O. Acetosella L. Acaulencent ; scape longer than the leaves, 1-flowered ; leaflets 

 broad-obcordate with rounded lobes ; styles as long as the inner stamens ; root den 

 tate, scaly, y. Wood*, Can. and N. States. (K. Flowers white-purple. June. 



