OXALIDACEAE— TROPAEOLACEAE n 



1 'elargonium — ( ieranium 

 (Or. peiargos, stork, referring to the form of the trait) 

 1. l'lant trailing; leaves ivj like, petiole attached to lower sui /'. peltdtum: ivy g. 



1 Plant erect, not trailing 



a. Leaves with shallow lobes, marked with a semicircular band; branches 



fleshy /'. hortorum: KotSt 



b. Leaves distinctly or deeply lobed, usually not coned; branches woody 



(1) Leaves rarely lobed to the middle, fragrant /'. domisticum: Lady 



Washington g. 



lobed beyond the middle, often to the base, fragrant 



Jong /'. graviolens: rose g. 



v b) Lobes linear /'. rJdula: rose g. 



Erodium — Storksbill 



(Or. erodios, heron, referring to the form of the fruit) 

 Low. spreading; leaves pinnate, hairy; flowers pink E. cicutdrium 



Oxalidaceae — Oxalis Family 

 Low, usually stemless herbs, with 3-foliate leaves and acid sap; sepals 5, petals 5, stamens 10, 

 ovary 5-celled, stigmas 5, fruit a capsule; flower syncarpous, apopetalous, hypogynoas, regular. 



Oxalis — Oxalis, Wood-sorrel 



(Gr. oxalis, sorrel, from oxys, sour, referring to the sap) 

 1. Native; flowers yellow, 510 mm. wide O. stricta 



1. Cultivated; flowers varicolored, 10-25 mm. wide 



a. Stems leafy; leaflets deeply notched; flowers yellow O. Ortgiesi 



b. Stems leafless ; leaflets not deeply notched ; flowers rose 



(1) Leaves fleshy, i ti cm, wide; stem from bulbs O. Bowiei 



leaves thin, hairy, 3-4 cm. wide; stem from thickened rootstocks O. rubra 



Balsaminaceae — Touch-me-not Family 

 Herbs with simple alternate leaves; sepals 4, one of them spurred, petals apparently 2, stamens 5, 

 ovary 5-celled, Stigma 1, frail a capsule which coils elasticaHy, ejecting the seeds; (lower syncarpous, 

 apopetalous, hypogynoas, irregular. 



Impatiens — Touch-me-not, Balsam, Jewel-weed 



(Lat. impatiens, impatient, hence t'.uch-me-not, from the elastic pods) 



1. Native; flowers pale-yellow to orange 



a. Flowers pale yellow, with scattered reddish dots /. pallida 



b. Flowers orange, densely dotted with red-brown /. /till a 



2. Cultivated ; flowers red to white, varicolored 



a. Flower flat, red ; spur long, narrow /. sultana 



b. Flower cup-like, varicolored, often double; spur short, conic /. balsamina: garden 



balsam, touch-me-not 



Tropaeolaceae — Tropaeolum Family 

 Fleshy herbs, climbing with their long petioles, or more or less creeping, the leaves round shield- 

 shaped, alternate; sepals 5, united at the base into a long spur, petals usually 5, stamens 8, ovary 

 3-celled, stigma 1, fruit of 3 fleshy achene-like bodies; flower incompletely syncarpous, apopetalous, 

 hypogynoas, irregular. 



Tropaeolum — Tropaeolum. Nasturtium, Indian Cress 



(Gr. tropaion, Lat. tropaeum, trophy, perhaps from the shield-like leaf) 



1. Petals large, spreading 



a. Leaves entire or wavy 



(1) Leaf veins ending in points; petals narrow, pointed T. minus 



(2) Leaf veins not pointed; petals broad, not pointed T. mdjus 



b. Leaves deeply lobed; Bowers bright yellow; spur green, hooked T. peregrinum 



2. Petals small, projecting from the vermillion calyx T. tricolor 



