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Project Name Data (Last Modified On 10/24/2012)
 

Flora Data (Last Modified On 10/24/2012)
Genus SCLERIA Berg
PlaceOfPublication Vet. Akad. Handl. 26:142. 1765.
Description Mostly leafy perennials, with small monoecious spikelets in terminal or axillary fascicles, or in interrupted spikes; fertile spikelets 1-flowered with several empty scales; staminate. spikelets many-flowered; achene crustaceous, globose to ovoid, frequently supported on a lobed or laciniate disc (hypogynium); stamens 1-3; style 3-cleft. About 100 species, chiefly in tropics of both hemispheres.
Key KEY I, BASED ON HABIT a. Inflorescence verticillate in an interrupted spike; slender plants with leaves 1-4 mm. wide. b. Inflorescence unbranched; plants rough-hairy. c. Achenes smooth--- - --- 2. S. HIRTELLA cc. Achenes reticulate -- ------------------------ 1. S. INTERRUPTA bb. Inflorescence often branched or lowest verticels long-peduncled. c. Verticels exceeded by elongate capillary bracts - - _ -- 4. S. LITHOSPERMA cc. Verticels as long as bracts. d. Sheaths glabrous _ - _ - _ - _ 3. S. PURDIEI dd. Sheaths pubescent at apex - -- -- -- 5. S. MICROCOCCA aa. Inflorescence a coarse extensively-branched panicle. b. Slender annual (?) with soft culms and roots; leaves usually 2-4 mm. wide - ----12. S. SETACEA bb. Coarse perennial, with usually broader scabrous leaves. c. Leaves 3-5 cm. wide; culms soft and smooth --- 10. S. LATIFOLIA cc. Leaves 0.2-3 cm. wide (sometimes broader in S. macrophylla, which has harsh sharply angled culms). d. Climbing scabrous plants with leaves 2-7 mm. wide - 15. S. SECANS dd. Non-climbing erect plants. e. Inflorescence bracts long subulate _-_-__-_-11. S. BRACTEATA ee. Inflorescence bracts leafy or inconspicuous. f. Culms retrorsely scabrous on margins _ - _ - l4. S. SETULOSO-CILIATA ff. Culms smooth to slightly roughened on the margins. g. Sheath-ligule pubescent at apex. h. Rachis and bracts of inflorescence purplish-brown- 13. S. PTEROTA hh. Rachis and bracts dull brown to green. i. Inflorescence compact; pistillate scales glossy brown 9. S. EGGERSIANA ii. Inflorescence loose; pistillate scales dull yellow - 6. S. MICROCARPA gg. Sheath-ligule glabrous. h. Ligule lanceolate; green _ - _ - _ _ 8. S. MITIS hh. Ligule short-ovate; purple-margined - - -- 7. S. MACROPHYLLA KEY II, BASED ON ACHENES 1. Hypogynium obscure or none. Sect. HYPOPORUM a. Achene reticulate, 1-1.5 mm. long. b. Reticulation shallow - -- --5. S. MICROCOCCA bb. Reticulation deep, the projections almost spinose - -- 1. S. INTERRUPTA aa. Achene smooth. b. Achene depressed-globose, 1 mm. long _ --- 3. S. PURDIEI bb. Achene obovoid. c. Achene 1-2 mm. long - 2. S. HIRTELLA cc. Achene 3 mm. long ------ 4. S. LITHOSPERMA 2. Hypogynium ciliate on the margin. Sect. OPHYROSCLERIA a. Cilia 0.5-1.0 mm. long, half as high as the hypogynium. b. Achene 4 mm. long; the dense cilia purplish-brown -8. S. MITIS bb. Achene 2.5-3 mm. long; the cilia pale brown, often in a single row -----9. S. EGGERSIANA aa. Cilia short and inconspicuous (ca. 0.1 mm. long). b. Achene very large, 3.5-6 mm. long _--- 7. S. MACROPHYLLA bb. Achene 2 mm. long -_ 6. S. MICROCARPA 3. Hypogynium with deeply fimbriate lobes. Sect. SCHIZOLEPIS a. Achene 2-3 mm. long, usually purplish -10. S. LATIFOLIA 4. Hypogynium 3-lobed, the lobes entire. Sect. EUSCLERIA a. Achene reticulate. b. Achene-surface with small isodiametric cells; the hypogynium acutely 3-lobed - -- ------ 12. S. SETACEA bb. Achene-surface horizontally ridged; the truncate hypogynium purple-margined - - _ - _ - _ 11. S. BRACTEATA aa. Achene smooth. b. Achene white, obovate to ovoid. c. Hypogynium lobes reflexed --- -- 15. S. SECANS cc. Hypogynium lobes crenulate and appressed ----- 14. S. SETULOSO-CILIATA bb. Achenes purple to white, depressed-globose; hypogynous lobes appressed _- __ -- __ - -- - - ___ - 13 S. PTEROTA
 
 
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