ORDER 30. GERANIACEJ5. 67 



Herbs. Disk annular, 10-lobtd. Fruit of 5 12 inddiiscent carpels TRIBUUJS. 1 



Trees. Disk inconspicuous. Frnit of 2 5 dehiscent, 1 -seeded carpels GITIACUV. 2 



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

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

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

 |RT'>*. with abruptly pinnate leaves. Flowers solitary (yellow). 



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



niiiml pair larsrest ; nutlets 10, tubercled, 1-seeded. Ga. Fla. 1 2f. 



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



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



2. GUAIACUM, JPlui. LiGNUM-ViT^E. Sep. and pet. 4 or 5, decidu- 

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

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

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



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

 natp ; 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 

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

 sepals, often some of them abortive or rudimentary. Carpel* 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 Ben- 

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

 orders. Figs. 27, 28, 172, 243, 265, 270, 315, 350, 497. 



$ Flowers regular. a Styles 5. Carpels several-seeded. TRIBK I. 



a Style 1. 6 Sepals valvate. Fruit beakless. THIBK II. 



fi Sepals imbricate. Fruit beaked. TRIBR III. 

 t Flowers Irregular. e Petals perigynous. Stamens 7 or 8. TRIBK IV. 



. f Petals hypogynoiis. Stamens 5. short. THIBET. 



I. OXALIDE.fi. Symmetrical. Stamens 10 + . Petals convolute. Pod 5-celled OXALIS. 1 



II. LIMNANTHE.E. Symmetrical. Stamens (10 in LIMH AMTHES, No. S) < In FIXCRKBA. S 



III. OERANIE^B. Stamens 10 + . 5 often sterile. Glands between the petals. Fruit a legma. .(c) 



e Stamens 10. all antheriferous. Tail of carpels beardless UKRAMTTM. 4 



t Stamens 5 antheriferous. Tail of the carpels bearded ERODIUM. 5 



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



/ Spur adnate to the pedicel. Fruit rostrate, a regma PELARGONIUM. 6 



/ Spur free. Fiuit not beaked. Carpels 1-seeded, separating TROP.SOLUM. 7 



V. BALSAMINE^E. Sepals spurred behind. Pod oaening plastically IMPATIKNS. 8 



1. OXALIS, L. WOOD SORREL. ('Oc-uS, 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- 

 ral-seeded. Mostly H, with palmately trifoliate leaves and inversely 

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

 I O. Aoetosella L. Acaulescent ; scape longer than the leaves, 1-flowered; leaflets 

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

 tatc, scaly. 11 Woods, Can. and N. States. 6'. Flowers white-purple. Jun3. 



