APPENDIX 1327 



spikes 4-7, the lower usually strongly separate, oblong to suborbicular, 4-7 mm. long: 

 scales ovate, obtusish or acutish, half length of perigynia: perigynia ovoid-oval, deep 

 green, 2.5 mm. long, 1.5 mm. wide, strongly nerved on both faces, widest towards 

 middle, strongly spreading when old, abruptly narrowed into a smooth beak ^-J 

 length of body [C. seorsa E. C. Howe.] — Differs from C. Atlantica in the smooth- 

 beaked perigynia which are broadest about the middle. 



In swampy woods, eastern Massachusetts to Stone Mountain, Georgia. 



Page 220, after Carex mirabilis, insert: 



112a. Carex hyalina Boott. Scapes 2.5-5 dm. tall, slender, erect, little if at all, 

 roughened above, exceeding the leaves: leaf -blades 1-2 mm. wide: spikes 3-4, little 

 separate, oblong or suborbicular, rounded at apex, light-green, 6-9 mm. long and 

 nearly as wide: scales ovate, much narrower than and about § length of perigynia: 

 perigynia broadly ovate, 5.5-6.5 mm. long, 2.5-3.25 mm. wide, strongly about 10- 

 nerved on both faces, broadly winged, the conspicuous, rough, beak, 2 mm. long. — 

 Differs from C. tenera in the light green spikes and the conspicuous beaks of the 

 perigynia. 



In open places, Arliansas and Texas. 



Page 221, in key to genera of Arecaceae, strike out the two lines referring to 

 Serenoa and Rhaphidophyllum, and insert : 



Flowers perfect: petals valvate: carpels free only at the base: style slender. 



Anthers longer than wide: seed elongate. 4. Serenoa. 



Anthers didymous: seed depressed. 4a. Paurotis. 



Flowers mostly polygamo-dioecious: petals imbricated: carpels free above: 



stigma sessile. 5. Rhapidophyllum. 



Page 224, strike out key to species of Serenoa, and at the end of the first sen- 

 tence in description of Serenoa serrulata, add : " or sometimes a tree. ' ' 



Before Seretioa arborescens, insert: 



4a. PAUROTIS O. F. Cook. 

 Trees with erect stems and armed petioles. Leaves spreading in all directions: 

 blades fan-shaped, with numerous segments: petioles elongated, the flat spines 

 colored. Spadix surpassing the leaves, the flowers very numerovis. Sepals broad, 

 short, partially united. Petals broad, but twice or thrice as long as the sepals. 

 Stamens 6 : filaments very broad at the base. Ovary 3-lobed, abruptly narrowed into 

 the style. Drupe globose, sometimes slightly depressed. — Differs from Serenoa in the 

 dilated filaments and short style. 



And in place of 2. Serenoa arborescens, insert: 



1. Paurotis Wrightil (Griseb. & Wendl.) Britten, and make Serenoa arbores- 

 cens Sarg. a synonym. 



Page 238, after Tradescantella, insert: 



3a. RHOEO Hance. 



Herbs with thick rootstocks and short tufted caudex-like stems. Leaves erect or 

 nearly so, stiff, crowded: blades contracted above the sheathing bases. Cymes con- 

 gested, borne in an involucre of imbricated boat-like bracts. Petals equal, not 

 clawed. Capsule sessile. — Differs from Tradescantella in the caudex-like stems and 

 the clustered boat-like involucral bracts. 



1. Rhoeo discolor (L'Her.) Hance. Leaves 2-4 dm. tall; blades very thick, 

 broadly linear, acute, often purple, especially beneath: flower-stalks clustered: sjiathes 

 3-4 cm. long: petals white or blue, 5-8 mm. long: capsules 4-5 mm. long. 



In sandy soil, peninsular Florida. Naturalized from Mexico. 



Page 238, after Tradescantia brevicaulis, insert: 



la. Tradescantia subacaulis Bush. Stems short, usually less than 1 dm. tall, 

 often clustered and leafless except at the base: leaf -blades linear to linear-lanceolate, 

 5-16 cm. long, attenuate, short-hairy; sheaths mostly 1-2 cm. long, finely pubescent: 

 bracts 2, longer than the leaves, at least on the primary stems, broadened and saccate 



