boreal regions of the Northern Hemisphere Species ca. 25 (15 in the flora). Plants of subg. Ptychostomum are distinctive in a number of characters, especially
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Illustrator: Barbara Alongi Copyright: Flora of North America Association Herbs, not rhizomatous, not stoloniferous; caudex 1–5 cm diam., scaly. Flowering-stems (appearing
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rectangular or rhomboid, usually 8–13 µm wide, 1: 1, 1-stratose, papillae usually simple to 2-fid, usually solid, with 3–5 projections, occasionally absent or multiplex
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Spikelets ellipsoid to lanceoloid, glabrous. Lower glumes (1/3) 1/2 - 3/4 as long as the spikelets, (3) 5-7-veined, truncate, obtuse, acute, or acuminate; lower
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to cuneate, dehiscent 1/4–1/3 their length; pedicellate, sometimes disarticulating from plant at maturity. Seeds numerous, in 1 or 2 rows per locule, grayish
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to broadly pyriform or urceolate, 1–6 [–10] mm, neck sometimes 1+ times urn length; exothecial cells near mouth in 1–3+ rows, medial cell-walls straight
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Saxifrag. 1: 25, plate 6. 1810 ,. Luc Brouillet, Patrick E. Elvander† Common names: Stoloniferous or spider or spider-legged saxifrage spider plant Illustrated
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partial hybrid sterility between plants placed in different species on the basis of their morphology "supports the recognition of more than one species among
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veins obscure or prominent, apices unawned; lower glumes 1 (3) -veined; upper glumes (1) 3 (5) -veined; calluses blunt, glabrous or pubescent; lemmas membranous
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scales basally attached, clathrate. Petioles not articulate. Blades 1–4-pinnate, of diverse size and shape. Indusia present. x = 36. Worldwide Species ca
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Branch fascicles with 2–3 spreading to 1–3 pendent branches. Branch stems green to pinkish, surrounded by 1 layer of efibrillose, nonornamented, enlarged
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the flora). Species of Philonotis are recognized by their 1-stratose leaves and the subfloral whorl of branches on fertile plants. While laminal cells
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from or 1/4–3/4 adnate to ovary, free to 0.5 mm, usually green, rarely purplish; sepals 5, green, sometimes reddish at tips; petals 5 (absent or 1–5 in M
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longest. Flowers 1; perianth white, yellow, rose, red, maroon, dark purple, or lavender, thinly pubescent; stamens 3–9; filaments adnate at base of floral-tube
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nw Mexico Subspecies 6 (6 in the flora). Plants of Orobanche californica occur almost entirely in and west of the Cascade-Sierra Nevada-Peninsular ranges
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brown, capsular, 3-valved, not strongly winged, ± oblong-obovate, 1.5–7.7 × 0.8–3.3 cm, 1.1–4.8 times longer than wide, base constricted, dehiscence loculicidal
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internodes 3.5-12 (15) mm. Spikelets 1/2 - 33/4 times the length of the rachis internodes, usually sessile, sometimes pedicellate, pedicels to 5 mm, appressed
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elliptic, and 5–30 mm. Peduncles absent or erect, slender, 0.1–0.5 cm, tomentose. Involucres 1 per node, campanulate, 3–5 × 2.5–4 mm, tomentose; teeth 5, erect
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campanulate to narrowly campanulate, 5–7.5 × 2.2–4.5 mm. Phyllaries in 2 series, unequal; outer 3–5, basally connate 1/2–3/4 their lengths, obovate to oblanceolate
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the lemmas, membranous or hyaline; anthers 1-3, 0.1-2.7 mm. Caryopses obovate to elliptic, falling free of the lemmas and paleas. x = 10. Conn., N.J.,
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