2 o6 LOOSESTRIFE ORDER 



1. Leaves entire or wavy, smooth T. subacaulis 



2. Leaves pinnatifid, finely hairy T. breviftora 



Zauschneria Presl 1831 

 (Named for Zauschner, a German botanist) 

 Sepals 4, united into a tube extending beyond the ovary, bearing 8 

 small scales inside at the upper end, petals 4, red, stamens 8, 4 longer, 

 ovary 4-celled, stigma 4-lobed, capsule linear, 4-angled ; flowers large, in 

 racemes ; leaves mostly opposite, simple, toothed ; perennial, or woody at 

 base. 



Stems .5-1 ft. high; leaves ovate, 1 in. long; calyx- 

 tube 12-15 mm. long Z. calif omica 



GUNNERACEAE WATER MILFOIL FAMILY 



Sepals 2-4, united into a calyx grown to the ovary, petals 2-4 or none, 

 stamens 1-8, ovary 1-4-celled, styles 1-4, fruit a nutlet or drupe of 2-4 

 1 -seeded carpels; flowers perfect, monoecious or dioecious, solitary or 

 clustered ; perennial or annual aquatic herbs with alternate or whorled 

 leaves, the submerged ones usually dissected. 



1. Leaves entire, 6-12 in a circle Hippuris 



2. Leaves finely cut, 3-5 in a circle Myriophyllum 



Hippuris Linne 1753 Bottle Brush 

 (Gr. hippos, horse, oura, tail) 

 Sepals united into an entire calyx, petals 0, stamen 1 on the margin of 

 the calyx, ovary 1-celled, style 1, fruit a 1-celled, 1-seeded drupe; flowers 

 axillary, perfect or imperfect ; leaves simple, entire, whorled ; aquatic peren- 

 nial. 

 Stems .5-2 ft. high ; leaves linear or lanceolate, 1-3 



cm. long H . vulgaris 



Myriophyllum Linne 1753 Water Milfoil 

 (Gr. myrios, countless, phyllon, leaf) 

 Sepals usually 2-4, united into a short tube, petals 2-4, greenish, stamens 

 4-8, ovary 2-4-celled with 1 ovule in each cell, styles 4, fruit maturing into 

 4 1-seeded closed carpels; flowers monoecious or perfect, axillary or be- 

 coming spiked ; leaves whorled or alternate, the aerial ones entire to cleft, 

 submerged ones finely dissected ; aquatic perennial. 



1. Flowers in a spike, the bracts small, ovate M.spicdtum 



2. Flowers in the axils of pinnatifid leaves M. vcrticillatum 



