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S. POTTIA CÆSPITOSA (Bmch.) C. Muell.
Autoicous ; lea ves pa tent, oblong, mucronate, with plane margins,
perich. b ra c ts 3, sheathing. Caps, ovate, not tapering at b a s e ; lid
rostrate, ca l. smooth. (T. X X IX , B.)
S y n .— Weissia acspitosa B r u c h MSS. B r id . Bry. univ. i, 808 (1827).
Anacaiypta cæsp. F u e r n r . in Fiora xii, P. II, Ergänz. 25 (1829). N e e s H o r n s c h . Bry.
germ, ii, P. II, 146, t. 37, f. 4 (1831). B r . S c h im p . Bry. eur. fasc. 18— 20, 3, t. 2 {1843).
R.a b e n h . Deutsch. kr. fl. ii, s. 3, 98 (1S4S). W i l s . Bry. br. 98, t. 41 (1855). S c h im p .
Synops. 127 (i860). B e r k . Handb. br. m. 268 {1863). D e N o t . Epil. bri. ital. 581
(i86g). H o b k . Syn. br. m. 57 (1S73).
Dcrmatodon cæsp. H u e b e n . musc. germ, i i i (1833).
Desmatodon cæsp. De No t. Syll. 203 (1838).
Pottia cæsp. C. M u e l l . Synops. i, 547 (1849). L in d b . de Tort. 219 (1864). M i t t . Journ.
Bot. 1S71, p. 4. H u s n . Mous. nord-ouest. 67 (1873). S c h im p . Synops. 2 ed. 157 (1876).
Autoicous ; densely cæspitnlose, simple or branched, yellow-green.
L e a v e s pa tent, lower ovato-lanc. upper oblong-lanc. concav e with plane
margins, papillose at back ; nerve excur rent in a short mucro ; cells
minute, incra ssa te, re c tangular a t base, rotundo-quadrate above-
Perich. b ra c ts 3, erect and sheathing, oblong-acuminate ; seta straw-
coloured ; caps, erect, ovate, often ra ther asymmetric, not tap er in g at
base, orange-brown ; ann. o f one row o f cells ; lid obliquely ros te llate
red ; ca l. smooth ; teeth o f per. on a narrow basal membrane, entire or
c left, irregular, pale. Male infl. gemmiform, b ra c ts ovato-acuminate,
nerved.
H a b .— C h alk hills, v e r y rare. F r . 3— 4.
Woolsonbury hill, Sussex [Mitten 1846) ! ! Near Arundel [Davies 1857) ! !
9. POTTIA STARKEI [Hedw.) C. Muell.
Pa roicous ; cæspitose. Le a v e s ovato-lanc. nerve excurrent, margin
reflexed. Capsule oval, small, ca lyp tra scabrous, lid convexo-conic,
obtuse, peristome short, more or less imperfect. (T. X X IX , C.)
S y n .— Weissia Starkeana H e d w . Stirp. cr, iii, 83, t. 34 B. (1792), Sp. musc. 65. B r id .
Musc. rec. II, P. I, 77 (1798), Sp. musc. I, 117 (1806), Mant. 44 (i8ig), Bry. univ. i, 553
(1826). R o e h l . Moosg. deutsch. 157 (1800), Deutsch. fl. iii, 50 (1813), Ann. Wett. ges.
iii, 108. S c h w a e g r . Suppl. I, P. I, 68 ( i8 ii ) . H o o k . T a y l . Musc. brit. 44, t. 14
(1818). F u n c k Moost. 13, t. 9 (1821). G r a y Nat. arr. br. pl. i, 72g (1821). H o o k .
Br. fl. ii, 20 (1833). M a c k . Fl. hib. P. 2, 14 (1836).
Bryum Stark. H o f fm . Deutsch. fl. ii, 32 ( 1 7 9 5 ) . P. B e a v . Prodr. 49 (18 0 5 ).
Grimmia Stark. R o th Fl. germ, iii, P. I, 146 (1800). S m . Fl. brit. 1186 (1804), Eng.
Bot. t. 1490. W e b . M o h r Bot. Tasch. 137 (1807). S c h k u h r Deutsch. kr. gew. P. II,
57. t. 24 (1810). V o it M u s c , herb. 32 (1812).
Bryum minutum Dicks. Crypt, fasc. IV, 7, t. 10, f. 17 (1801).
Anacalypta Stark. F u e r n r . in F’lora xii, P. II, Ergänz. 25 (1829). N e e s H o r n s c h .
Bry. germ, ii, P. II, 138, t. 36, f. 2 (1831). B r . S c h im p . Bry. eur. fase. 18-20, p. 2, t. i
(1843). R a b e n h . Deutsch. kr, fl. ii, s. 3, 98 (1848). W i l s . Bry. br. 97, t. 14 (1855).
S c h im p . Synops. 126 (i860). B e r k . Handb. br. m. 268 (1863). D e N o t , Epil. bri.
ital. 582 (1869). H o b k . Syn. br. m. 57 (1873).
Dcrmatodon Stark. H u e b e n . M usc. g e rm . 109 (1833).
Desmatodon Stark. De No t. Syll. 205 (1838).
Pottia stark. C. M u e l l . Synops. i, 547 (1849). M i t t , in ann. nat. hist. Ser. 2, viii, 312
(1851), Journ. Bot. 1871, p. 3. L in d b . de Tort. 219 {1864}. H u s n . M o u s s . nord-ouest.
66 (1873). SCHIMB. Synops. 2 ed. 156 (1876). J u r a t z . Laubm. oester.-ung. 92 (1882).
L e s q . J am e s Mosses N. Amer. 103 (1884).
Pottia mutica V e n t u r i D e N o t . Epil. bri. ital. 592 (1869).
Tortula Starkei L in d b . M u s c . scand. 21 (187g).
Paroicous ; dwarf, cæspitose. L e a v e s spreading, ovate- and
oblongo-lanceolate, papillose above, margin recurved, entire, nerve
reddish, excurrent in a short mucro ; cells rec tangular at base, opake
and hexagonal above. Cap s, on an orange seta, minute, oval or oblong,
glos sy , castaneous, leptodermous ; ca l. scabrous ; ann. narrow, persistent
; lid orange, obtuse conic ; te e th flat, linear, obtuse or truncate,
o f 3— 4 a rtic . entire or perforated, papillose, pale yellow, erect when
dry. Antheridia axillary in upper leaves, sometimes covered by a bra ct.
H ab.— F allow fields and banks ; not common. Fr. 12— 3.
Near Dublin and Cork. Cliffs on Sussex coast and Hurstpierpoint [Mitten). Rottingdean
(Daii/cs 1855) ! ! Plymouth (Ho/hz£5 1867)!! Beaumaris (H«>ii 1871). Buxton
[Hunt 1872) ! ! Penzance [Curnow).
Var. /?. affiiiis [Hook. Tayl.)
Leaves longer, paler and more erect ; teetli very short, truncate.
S y n .— Weissia affinis H o o k . T a y l . M u sc . br. 44, t. 14 (1818). B r id . Bry. un. i, 354. H o o k .
Br. fl. 20. G r a y .
Dcrmatodon aff. H u e b e n . M u s c . i i o .
Anacalypta aff. F u e r n r . 1. c .
Anacalypta Stark. ¡3. brachyodus. Bry. eur. C. M u e l l .
Pottia Stark. Var. ¡3. brachyoda. L in d b . de Tort. 2 19 . S c h im p . Synops. 2 ed.
H ab.— C oast of Sussex, Durham and Anglesea, Dublin.
Var. y. Davallii [Sm.) Lindh.
Very small ; leaves patulous, becoming red by age, nerve rufous. Caps,
ovate, truncate, lid large.
S y n .— Gymnostomum DavalUannm S m. in K o n . S im s Ann. Bot. i, 577 (1805), et in S c h r a d .
Journ. i, 191.
Gymn. rufescens S c h u l t z F l . starg. 278 (1806). N e e s H n s c h . Bry. germ, i, 12 1 , t. 9, f.
I , B r id . Mant, 12. B r y . univ. i , 62.
Gymn. ininutulnm S c h l e i c h . Cat. pl. helv. 29 (1807). W e b . M o h r Tasch. 479. S c h w a e g r .
Suppl. I, P. I, 25, t. g. B r id . Mant. 12; Bry. un. i, 61. N e e s H o r n s c h . S ch im p .
D e N o t . H u e b e n .
Gymn. conicum S c h l e ic h . 1. c . S c h w a e g r . Suppl. I, P. I, 26, t. 9. H o o k T a y l . 12, t. 8.
Eng. b o t. t. 2676. B r id . op. c. N e e s H o r n s c h . H u e b e n . D e N o t , & c .
Gymn. rcflcxum B r id . Bry. un iv . i, 63.
Pottia miniitiiln, rufescens and conica F u e r n r op. c. 10.
Pottia minntula et Var. rufescens and y . conica Bry. eur. W i l s . Bry, br. 93. S c h im p .
S y n o p s . B e r k . D e N o t .
Poitia Starkei Var. y . gymnostoma L in d b . d e Tort. 2 19 (1864).
H ab.— C lay soil and fallow fields ; not uncommon.
Although the three plants here brought together, are usually regarded
as distinct, there is no structural difference to be detected between them ;
the capsule is very variable in length, and the peristome equally so in the
amount of its development.