SAGITTARIA 



regions. Most of the species have arrow-shaped leaves 

 whence the name. They are useful for foliage effects 

 in bogs and shallow ponds, and also for their white 

 buttercup-like flowers, which are borne in successive 

 small whorls on an erect scape. They are mostly used 

 for colonizing in the open, but S. M<iteridensis no\v 

 the most popular species is grown in indoor aquaria or 



SAINTPAULIA 



1597 



2226. Common Arrowhead Sagittaria latifolia (X %). 

 Commonly known as S. variabilis. 



plunged in open ponds in the summer. The arrowheads 

 are perennials of easy culture, although likely to be 

 infested with aphis. Prop, by division, or sometimes 

 by seeds. 



Plants of mostly erect habit, the Ivs. and scapes aris- 

 ing from more or less tuberous or knotted rootstocks: 

 Ivs. typically arrow-shaped, with long basal lobes, but 

 sometimes long and linear: fls. imperfect, monoecious 

 (staminate fls. usually in the uppermost whorls) or di- 

 oacious, with 3 white broad petals and 3 small greenish 

 sepals, the stamens and pistils numerous, the latter 

 ripening into small akenes : inflorescence composed of 

 successive whorls of 3-stalked fls. Sometimes the Ivs. 

 are floating. 



A. Sepals of pistillate fls. (usually in the lower 

 u'horls) erect after flowering, and the pedicels of 

 these fls. thick: carpels not glandular. 



Montevidensis, Cham. & Schlecht. GIANT ARROW- 

 HEAD. Very large, sometimes growing 6 ft. tall, with 

 leaf -blades 1-2 ft. long: Ivs. arrow-shaped, with long, 

 diverging, sharp basal lobes: fls. very large (2 to nearly 

 3 in. across), the rounded petals white with a purple 

 blotch at the base. Argentina to Brazil, Chile and Peru. 

 B.M. 6755. Gn. 27:473. I.H. 31:543. -First known as a 

 cult, plant from seeds sent to England in 1883 from 

 Buenos Ayres by John Ball. It is now a popular plant 

 for aquaria and lily ponds. Tender to frost. It is spar- 

 ingly naturalized in the southern parts of the U. S., on 

 both the Atlantic and Pacific sides. 



AA. Sepals of pistillate fls. reflexed nftrr flmt-erina- 

 pedicels of these fls. slender: carpels someu-ha't 



lllnndular. 



B. Bracts at base of whorls united, as if only 1. 

 pusflla, Nutt. ( N. ntHuu, in part. S. subulata, Buch.) 

 Mender and simple, usually only a few inches hiftb 

 Ivs. mear or narrowly oblanceolate, rigid: fis few 

 usually in 1 whorl, white, X-% in. across? the filaments 

 broad. N. Y to Ala., along the coast.-Offered by 

 dealers in native plants. 



BB. Bracts 3, at base of the whorls, 

 c. Lvs. usually distinctly sagittal.-. 



latifolia, Willd. (S. varidbilis, Engelm. S. sagitta- 

 Mia, var. varidbilis, Michx.). Fig. 2226. Very variable 

 in stature and shape of Ivs., ranging from a few inches 

 to 3-4 ft. tall: Ivs. mostly broad-sagittate with long 

 basal lobes, but running into very narrow forms: fls. 

 clear white, about 1 in. across, usually mono-clous, the 

 filaments slender: akene winged, with a lateral or ob- 

 lique beak. Common everywhere in margins of ponds 

 and lakes, and offered by dealers in native plants for 

 colonizing in bog gardens and in lily ponds. 



sagittaefblia, Linn. OLD WORLD ARROWHEAD. 

 Rhizome thick and tuberous, stolon-bearing: Ivs. broad 

 and sagittate, very variable in form and size: scapes 

 erect, simple or branched, overtopping the Ivs.: bracts 

 narrow-ovate, free or slightly connate at base, shorter 

 than the pedicels: petals large, white; filaments gla- 

 brous: akene nearly or quite orbicular and in this re- 

 spect differing from the allied American species. 

 Throughout Europe and Asia. By some authors the 

 American S. latifolia and others are considered to be 

 con-specific. There is a form with double tts. ( var. flore- 

 pleno, Hort. S. Japonica, Hort. ). S. Chinensis of most 

 trade lists is apparently one of the many forms of this 

 species. There appears to be another S. Chinensis in 

 the trade, with lanceolate Ivs., the botanical position of 

 which is undetermined. 



cc. Lvs. usually oblong or linear and not sagittate. 



D. Filaments slender, tapering upward, cobwebby. 



lancifolia, Linn. Erect and somewhat rigid, glabrous, 

 the scape sometimes reaching 5 ft.: Ivs. lanceolate to 

 narrow-oblong to nearly linear, nerved from the thick 

 midrib: fis. white, in several whorls. Swamps, Del. to 

 the tropics. 



DD. Filaments abruptly broadened, pubescent. 

 graminea, Michx. Erect and simple, glabrous, 2 ft. 

 or less high: Ivs. reduced to phyllodia, flat, broad-linear 

 to lance-elliptic, pointed: fls. small, white, in 2 or 3 



whorls - L. H. B. 



SAGO PALM. Consult Cycas. 



SAINFOIN, or SAINTFOIN. Onobrychis vicicefolia. 

 ST. ANDKEWS CBOSS. Ascyrum Crux-Andrece. 

 ST. DABEOC'S HEATH. See Dabaecia. 

 ST. GEOBGE'S HEBB. I'aleriana officinalis. 

 ST. JOHN'S BBEAD. Ceratonia Siliqua. 



ST. JOHN'S- WOBT. See ffypericum ; also Sym- 

 phoricarpus. 



ST. PATBICK'S CABBAGE. Saxifraga umbrosa. 



ST. PETEB'S-WOBT. Ascyrum stans. Also applied 

 to species of Hypericum, Primula and Symphoricarpus. 



SAINTPAtfLIA (from the discoverer of the plant, 

 Baron Walter von Saint Paul). Gesnerace<e. USAMBAKA 

 VIOLET. A monotypic genus from eastern tropical 

 Africa, where it was found growing in wooded places in 

 fissures of limestone and granite rocks, in rich, light 

 soil. It is a stemless hairy perennial herb with short- 

 petioled ovate or oblong-cordate Ivs. 1-2 in. long and 

 nodding blue fis. 1 in. across, borne in stout peduncled 



