EXOGENS. 131 



(miscalled Geranium). Pet. 2-4-5. Sta. 4-5-6-7, often with attendant 

 staminodes. Fls. irreg., calyx spurred, sta. declinate. Pr. a regma. 

 Lvs. simple or comp. More than 300 spec. ; varied in If., stem, fl. 

 habit; often evergreen shruljs;' often fragrant; stems often fleshy.' 

 Cape of Good Hope ; few in Australia; 1 in Canaries ; 1 in Asia. P. 

 Endlieheridnum, evergreen shrub, fls. pink. Taurus Mts. P. cor- 

 ddtum, lvs. cordate, fls. pink, Fig. 150; P. tricolor, lvs. lance.-oblons:;, 

 pinnatifid ; fls. pansy-like ; Pig. 150 ; both evergreen shrubs. Cape. 

 Tribe 7, Pis. reg. or nearly so. Pr. a regma. Herbs, evergreen 

 shrubs, lvs. various. Few in Am. 1. Erodium, Stork's-Bill. Pet. 

 5. Sta. 5, staminodes 5. Carpel-beaks bearded, spirally coiled. 0, 

 Q|. herbs. Many showy spec., chiefly in Medit. States ; none in Am. 

 E. cicuidrium, Pin-grass. Q, low, fls. pink; lvs. pinnate. Eur.; 

 nat. in Tex., Cal. ; greedily eaten by cattle. 2. Geranium, Cranb's- 

 BiLL. Fls. reg. Pet. 5. Sta. 10, connate at base. Carpel-beaks not 

 bearded. Lvs. palmate-lobed, lobes cut. Herbs, evergreen shrubs. 

 Many showy spec, chiefly in Medit. States. G. Robertidnum, Hjsrb 

 EoBERT, (2), diff"use, fls. pink. Pig. 150. Eur. ; Can. to Ky. G. 

 carolinidnum, ©, (2), 6'-18' high ; fls. pink ; G. maculdium, Q|., 2° 

 high ; fls. purple, lvs. blotched. Can. to Gulf. G. sanguineum, Q|., 

 l°high; fls. blood-red. Pr., Fig. 174. Gt. Brit. 3. Monsonia, 4. 

 Sarcocaulon, fleshy low shrubs, fls. showy. S. Af. 



Ord. 119. Batidese.* — Founded on a monotypic plant, Batis ')nari- 

 tima, salt-mai-shes, W. Ind., Gulf coast of PI a. Pis. ^ 9i 4-merous ; 



9 fl. achlamyd. ; infl. spicate, fleshy. Drupe, 4-seeded. Gray, pros- 

 trate stems 2°-3° long ; lvs. opp. , fleshy, club-shaped. Affinities ob- 

 scure; near Tribulus in Zygophvllacese. 



Ord. 120. Zygophyllacese.-^Pet. 5-4. Sta. 10-8, rarely fewer. 

 Pis. reg. or irreg., red, white, yellow, blue. Peduncles 1-3. Pr. 2- 



10 cocci, gynobasic ; connate or separable ; sometimes a boll. Lvs. 

 opp., pinnate; stipules sometimes spinescent. Herbs, Shrubs, Trees, 

 chiefly trop., both worlds. 17 gen. 1. Guaiacum. Fls. blue. Ova. 

 stipitate. Cocci 2-5. Lfts. 4-6-8. Evergreen trees, yielding the 

 gum Gudiac and the heavy wood Lignum-vitce. Trop. Am. Several 

 spec. G. officinale, 30° high. Fig. 128. G. sanctum, Holy G. 20° 

 high. S. Pla., W. Ind. 2. Zygophyllum. Pis. yellow, red, white. 

 Boll. Lfts. 2, often fleshy. Q|. herbs, or evergreen tree.^, shrubs. 

 Several spec. Cape of G. H., Cape Verde Islands, Levant. Z. Fabdgo, 

 Bkan-Capbr, QJ. herb, 4° high ; boll legume-like, used as capers. 

 Syria. 3. Tribulus, Caltrops. Lfts. 6 to 16. Fls, yellow, white. 

 Cocci 2-5, spiny. Q,- QJ. prostrate herbs; numerous spec, both 

 worlds. T. cistoides, fls. large, yellow; stems l°-2° long. S. Fla., 

 W. Ind. 



Ord. 121. Coriariaceae.* — Pis. SJ , c? g $ , racemed. Pet. 5, fleshy ; 

 sta. 10. Fr. .5-8 cocci, embraced by the accrescent petals. Shrubs, 

 unarmed, evergreen ; lvs. simple, opp. or whorled. Only gen. Cori- 

 aria. Several spec, Medit. States, trop. Asia, New Z., S. Asia. 

 Aflinities obscure ; near Malpighiacese. 



Ord. 123. Malpighiacese. —Fls. § , J* § ? , racemed or panicled. 

 Pet. 5, fringed. Sta. 10 ; fil. usually connate at base. Fls. dimor- 

 phous ; apet. in the odd form. Fr. 3, or fewer, samaras or eocci, or 

 carpels connate into a drupe. Lvs. stip., usually opp. ; petiole jointed 

 to the stem. Evergreen Trees, Shrubs, usually climbing ; showy. 45 



